5 This is a high-level summary of the most important changes.
6 For a full list of changes, see the git commit log; for example,
7 https://github.com/openssl/openssl/commits/ and pick the appropriate
10 Changes between 1.1.1v and 1.1.1w [11 Sep 2023]
12 *) Fix POLY1305 MAC implementation corrupting XMM registers on Windows.
14 The POLY1305 MAC (message authentication code) implementation in OpenSSL
15 does not save the contents of non-volatile XMM registers on Windows 64
16 platform when calculating the MAC of data larger than 64 bytes. Before
17 returning to the caller all the XMM registers are set to zero rather than
18 restoring their previous content. The vulnerable code is used only on newer
19 x86_64 processors supporting the AVX512-IFMA instructions.
21 The consequences of this kind of internal application state corruption can
22 be various - from no consequences, if the calling application does not
23 depend on the contents of non-volatile XMM registers at all, to the worst
24 consequences, where the attacker could get complete control of the
25 application process. However given the contents of the registers are just
26 zeroized so the attacker cannot put arbitrary values inside, the most likely
27 consequence, if any, would be an incorrect result of some application
28 dependent calculations or a crash leading to a denial of service.
34 Changes between 1.1.1u and 1.1.1v [1 Aug 2023]
36 *) Fix excessive time spent checking DH q parameter value.
38 The function DH_check() performs various checks on DH parameters. After
39 fixing CVE-2023-3446 it was discovered that a large q parameter value can
40 also trigger an overly long computation during some of these checks.
41 A correct q value, if present, cannot be larger than the modulus p
42 parameter, thus it is unnecessary to perform these checks if q is larger
45 If DH_check() is called with such q parameter value,
46 DH_CHECK_INVALID_Q_VALUE return flag is set and the computationally
47 intensive checks are skipped.
52 *) Fix DH_check() excessive time with over sized modulus
54 The function DH_check() performs various checks on DH parameters. One of
55 those checks confirms that the modulus ("p" parameter) is not too large.
56 Trying to use a very large modulus is slow and OpenSSL will not normally use
57 a modulus which is over 10,000 bits in length.
59 However the DH_check() function checks numerous aspects of the key or
60 parameters that have been supplied. Some of those checks use the supplied
61 modulus value even if it has already been found to be too large.
63 A new limit has been added to DH_check of 32,768 bits. Supplying a
64 key/parameters with a modulus over this size will simply cause DH_check()
69 Changes between 1.1.1t and 1.1.1u [30 May 2023]
71 *) Mitigate for the time it takes for `OBJ_obj2txt` to translate gigantic
72 OBJECT IDENTIFIER sub-identifiers to canonical numeric text form.
74 OBJ_obj2txt() would translate any size OBJECT IDENTIFIER to canonical
75 numeric text form. For gigantic sub-identifiers, this would take a very
76 long time, the time complexity being O(n^2) where n is the size of that
77 sub-identifier. (CVE-2023-2650)
79 To mitigitate this, `OBJ_obj2txt()` will only translate an OBJECT
80 IDENTIFIER to canonical numeric text form if the size of that OBJECT
81 IDENTIFIER is 586 bytes or less, and fail otherwise.
83 The basis for this restriction is RFC 2578 (STD 58), section 3.5. OBJECT
84 IDENTIFIER values, which stipulates that OBJECT IDENTIFIERS may have at
85 most 128 sub-identifiers, and that the maximum value that each sub-
86 identifier may have is 2^32-1 (4294967295 decimal).
88 For each byte of every sub-identifier, only the 7 lower bits are part of
89 the value, so the maximum amount of bytes that an OBJECT IDENTIFIER with
90 these restrictions may occupy is 32 * 128 / 7, which is approximately 586
93 Ref: https://datatracker.ietf.org/doc/html/rfc2578#section-3.5
97 *) Reworked the Fix for the Timing Oracle in RSA Decryption (CVE-2022-4304).
98 The previous fix for this timing side channel turned out to cause
99 a severe 2-3x performance regression in the typical use case
100 compared to 1.1.1s. The new fix uses existing constant time
101 code paths, and restores the previous performance level while
102 fully eliminating all existing timing side channels.
103 The fix was developed by Bernd Edlinger with testing support
107 *) Corrected documentation of X509_VERIFY_PARAM_add0_policy() to mention
108 that it does not enable policy checking. Thanks to
109 David Benjamin for discovering this issue. (CVE-2023-0466)
112 *) Fixed an issue where invalid certificate policies in leaf certificates are
113 silently ignored by OpenSSL and other certificate policy checks are skipped
114 for that certificate. A malicious CA could use this to deliberately assert
115 invalid certificate policies in order to circumvent policy checking on the
116 certificate altogether. (CVE-2023-0465)
119 *) Limited the number of nodes created in a policy tree to mitigate
120 against CVE-2023-0464. The default limit is set to 1000 nodes, which
121 should be sufficient for most installations. If required, the limit
122 can be adjusted by setting the OPENSSL_POLICY_TREE_NODES_MAX build
123 time define to a desired maximum number of nodes or zero to allow
124 unlimited growth. (CVE-2023-0464)
127 Changes between 1.1.1s and 1.1.1t [7 Feb 2023]
129 *) Fixed X.400 address type confusion in X.509 GeneralName.
131 There is a type confusion vulnerability relating to X.400 address processing
132 inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING
133 but subsequently interpreted by GENERAL_NAME_cmp as an ASN1_TYPE. This
134 vulnerability may allow an attacker who can provide a certificate chain and
135 CRL (neither of which need have a valid signature) to pass arbitrary
136 pointers to a memcmp call, creating a possible read primitive, subject to
137 some constraints. Refer to the advisory for more information. Thanks to
138 David Benjamin for discovering this issue. (CVE-2023-0286)
140 This issue has been fixed by changing the public header file definition of
141 GENERAL_NAME so that x400Address reflects the implementation. It was not
142 possible for any existing application to successfully use the existing
143 definition; however, if any application references the x400Address field
144 (e.g. in dead code), note that the type of this field has changed. There is
148 *) Fixed Use-after-free following BIO_new_NDEF.
150 The public API function BIO_new_NDEF is a helper function used for
151 streaming ASN.1 data via a BIO. It is primarily used internally to OpenSSL
152 to support the SMIME, CMS and PKCS7 streaming capabilities, but may also
153 be called directly by end user applications.
155 The function receives a BIO from the caller, prepends a new BIO_f_asn1
156 filter BIO onto the front of it to form a BIO chain, and then returns
157 the new head of the BIO chain to the caller. Under certain conditions,
158 for example if a CMS recipient public key is invalid, the new filter BIO
159 is freed and the function returns a NULL result indicating a failure.
160 However, in this case, the BIO chain is not properly cleaned up and the
161 BIO passed by the caller still retains internal pointers to the previously
162 freed filter BIO. If the caller then goes on to call BIO_pop() on the BIO
163 then a use-after-free will occur. This will most likely result in a crash.
165 [Viktor Dukhovni, Matt Caswell]
167 *) Fixed Double free after calling PEM_read_bio_ex.
169 The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and
170 decodes the "name" (e.g. "CERTIFICATE"), any header data and the payload
171 data. If the function succeeds then the "name_out", "header" and "data"
172 arguments are populated with pointers to buffers containing the relevant
173 decoded data. The caller is responsible for freeing those buffers. It is
174 possible to construct a PEM file that results in 0 bytes of payload data.
175 In this case PEM_read_bio_ex() will return a failure code but will populate
176 the header argument with a pointer to a buffer that has already been freed.
177 If the caller also frees this buffer then a double free will occur. This
178 will most likely lead to a crash.
180 The functions PEM_read_bio() and PEM_read() are simple wrappers around
181 PEM_read_bio_ex() and therefore these functions are also directly affected.
183 These functions are also called indirectly by a number of other OpenSSL
184 functions including PEM_X509_INFO_read_bio_ex() and
185 SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL
186 internal uses of these functions are not vulnerable because the caller does
187 not free the header argument if PEM_read_bio_ex() returns a failure code.
189 [Kurt Roeckx, Matt Caswell]
191 *) Fixed Timing Oracle in RSA Decryption.
193 A timing based side channel exists in the OpenSSL RSA Decryption
194 implementation which could be sufficient to recover a plaintext across
195 a network in a Bleichenbacher style attack. To achieve a successful
196 decryption an attacker would have to be able to send a very large number
197 of trial messages for decryption. The vulnerability affects all RSA padding
198 modes: PKCS#1 v1.5, RSA-OEAP and RSASVE.
200 [Dmitry Belyavsky, Hubert Kario]
202 Changes between 1.1.1r and 1.1.1s [1 Nov 2022]
204 *) Fixed a regression introduced in 1.1.1r version not refreshing the
205 certificate data to be signed before signing the certificate.
208 Changes between 1.1.1q and 1.1.1r [11 Oct 2022]
210 *) Fixed the linux-mips64 Configure target which was missing the
211 SIXTY_FOUR_BIT bn_ops flag. This was causing heap corruption on that
215 *) Fixed a strict aliasing problem in bn_nist. Clang-14 optimisation was
216 causing incorrect results in some cases as a result.
219 *) Fixed SSL_pending() and SSL_has_pending() with DTLS which were failing to
220 report correct results in some cases
223 *) Fixed a regression introduced in 1.1.1o for re-signing certificates with
227 *) Added the loongarch64 target
230 *) Fixed a DRBG seed propagation thread safety issue
233 *) Fixed a memory leak in tls13_generate_secret
236 *) Fixed reported performance degradation on aarch64. Restored the
237 implementation prior to commit 2621751 ("aes/asm/aesv8-armx.pl: avoid
238 32-bit lane assignment in CTR mode") for 64bit targets only, since it is
239 reportedly 2-17% slower and the silicon errata only affects 32bit targets.
240 The new algorithm is still used for 32 bit targets.
243 *) Added a missing header for memcmp that caused compilation failure on some
247 Changes between 1.1.1p and 1.1.1q [5 Jul 2022]
249 *) AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised
250 implementation would not encrypt the entirety of the data under some
251 circumstances. This could reveal sixteen bytes of data that was
252 preexisting in the memory that wasn't written. In the special case of
253 "in place" encryption, sixteen bytes of the plaintext would be revealed.
255 Since OpenSSL does not support OCB based cipher suites for TLS and DTLS,
256 they are both unaffected.
258 [Alex Chernyakhovsky, David Benjamin, Alejandro Sedeño]
260 Changes between 1.1.1o and 1.1.1p [21 Jun 2022]
262 *) In addition to the c_rehash shell command injection identified in
263 CVE-2022-1292, further bugs where the c_rehash script does not
264 properly sanitise shell metacharacters to prevent command injection have been
267 When the CVE-2022-1292 was fixed it was not discovered that there
268 are other places in the script where the file names of certificates
269 being hashed were possibly passed to a command executed through the shell.
271 This script is distributed by some operating systems in a manner where
272 it is automatically executed. On such operating systems, an attacker
273 could execute arbitrary commands with the privileges of the script.
275 Use of the c_rehash script is considered obsolete and should be replaced
276 by the OpenSSL rehash command line tool.
278 [Daniel Fiala, Tomáš Mráz]
280 *) When OpenSSL TLS client is connecting without any supported elliptic
281 curves and TLS-1.3 protocol is disabled the connection will no longer fail
282 if a ciphersuite that does not use a key exchange based on elliptic
283 curves can be negotiated.
286 Changes between 1.1.1n and 1.1.1o [3 May 2022]
288 *) Fixed a bug in the c_rehash script which was not properly sanitising shell
289 metacharacters to prevent command injection. This script is distributed
290 by some operating systems in a manner where it is automatically executed.
291 On such operating systems, an attacker could execute arbitrary commands
292 with the privileges of the script.
294 Use of the c_rehash script is considered obsolete and should be replaced
295 by the OpenSSL rehash command line tool.
299 Changes between 1.1.1m and 1.1.1n [15 Mar 2022]
301 *) Fixed a bug in the BN_mod_sqrt() function that can cause it to loop forever
302 for non-prime moduli.
304 Internally this function is used when parsing certificates that contain
305 elliptic curve public keys in compressed form or explicit elliptic curve
306 parameters with a base point encoded in compressed form.
308 It is possible to trigger the infinite loop by crafting a certificate that
309 has invalid explicit curve parameters.
311 Since certificate parsing happens prior to verification of the certificate
312 signature, any process that parses an externally supplied certificate may
313 thus be subject to a denial of service attack. The infinite loop can also
314 be reached when parsing crafted private keys as they can contain explicit
315 elliptic curve parameters.
317 Thus vulnerable situations include:
319 - TLS clients consuming server certificates
320 - TLS servers consuming client certificates
321 - Hosting providers taking certificates or private keys from customers
322 - Certificate authorities parsing certification requests from subscribers
323 - Anything else which parses ASN.1 elliptic curve parameters
325 Also any other applications that use the BN_mod_sqrt() where the attacker
326 can control the parameter values are vulnerable to this DoS issue.
330 *) Add ciphersuites based on DHE_PSK (RFC 4279) and ECDHE_PSK (RFC 5489)
331 to the list of ciphersuites providing Perfect Forward Secrecy as
332 required by SECLEVEL >= 3.
334 [Dmitry Belyavskiy, Nicola Tuveri]
336 Changes between 1.1.1l and 1.1.1m [14 Dec 2021]
338 *) Avoid loading of a dynamic engine twice.
342 *) Fixed building on Debian with kfreebsd kernels
346 *) Prioritise DANE TLSA issuer certs over peer certs
350 *) Fixed random API for MacOS prior to 10.12
352 These MacOS versions don't support the CommonCrypto APIs
356 Changes between 1.1.1k and 1.1.1l [24 Aug 2021]
358 *) Fixed an SM2 Decryption Buffer Overflow.
360 In order to decrypt SM2 encrypted data an application is expected to call the
361 API function EVP_PKEY_decrypt(). Typically an application will call this
362 function twice. The first time, on entry, the "out" parameter can be NULL and,
363 on exit, the "outlen" parameter is populated with the buffer size required to
364 hold the decrypted plaintext. The application can then allocate a sufficiently
365 sized buffer and call EVP_PKEY_decrypt() again, but this time passing a non-NULL
366 value for the "out" parameter.
368 A bug in the implementation of the SM2 decryption code means that the
369 calculation of the buffer size required to hold the plaintext returned by the
370 first call to EVP_PKEY_decrypt() can be smaller than the actual size required by
371 the second call. This can lead to a buffer overflow when EVP_PKEY_decrypt() is
372 called by the application a second time with a buffer that is too small.
374 A malicious attacker who is able present SM2 content for decryption to an
375 application could cause attacker chosen data to overflow the buffer by up to a
376 maximum of 62 bytes altering the contents of other data held after the
377 buffer, possibly changing application behaviour or causing the application to
378 crash. The location of the buffer is application dependent but is typically
383 *) Fixed various read buffer overruns processing ASN.1 strings
385 ASN.1 strings are represented internally within OpenSSL as an ASN1_STRING
386 structure which contains a buffer holding the string data and a field holding
387 the buffer length. This contrasts with normal C strings which are repesented as
388 a buffer for the string data which is terminated with a NUL (0) byte.
390 Although not a strict requirement, ASN.1 strings that are parsed using OpenSSL's
391 own "d2i" functions (and other similar parsing functions) as well as any string
392 whose value has been set with the ASN1_STRING_set() function will additionally
393 NUL terminate the byte array in the ASN1_STRING structure.
395 However, it is possible for applications to directly construct valid ASN1_STRING
396 structures which do not NUL terminate the byte array by directly setting the
397 "data" and "length" fields in the ASN1_STRING array. This can also happen by
398 using the ASN1_STRING_set0() function.
400 Numerous OpenSSL functions that print ASN.1 data have been found to assume that
401 the ASN1_STRING byte array will be NUL terminated, even though this is not
402 guaranteed for strings that have been directly constructed. Where an application
403 requests an ASN.1 structure to be printed, and where that ASN.1 structure
404 contains ASN1_STRINGs that have been directly constructed by the application
405 without NUL terminating the "data" field, then a read buffer overrun can occur.
407 The same thing can also occur during name constraints processing of certificates
408 (for example if a certificate has been directly constructed by the application
409 instead of loading it via the OpenSSL parsing functions, and the certificate
410 contains non NUL terminated ASN1_STRING structures). It can also occur in the
411 X509_get1_email(), X509_REQ_get1_email() and X509_get1_ocsp() functions.
413 If a malicious actor can cause an application to directly construct an
414 ASN1_STRING and then process it through one of the affected OpenSSL functions
415 then this issue could be hit. This might result in a crash (causing a Denial of
416 Service attack). It could also result in the disclosure of private memory
417 contents (such as private keys, or sensitive plaintext).
421 Changes between 1.1.1j and 1.1.1k [25 Mar 2021]
423 *) Fixed a problem with verifying a certificate chain when using the
424 X509_V_FLAG_X509_STRICT flag. This flag enables additional security checks
425 of the certificates present in a certificate chain. It is not set by
428 Starting from OpenSSL version 1.1.1h a check to disallow certificates in
429 the chain that have explicitly encoded elliptic curve parameters was added
430 as an additional strict check.
432 An error in the implementation of this check meant that the result of a
433 previous check to confirm that certificates in the chain are valid CA
434 certificates was overwritten. This effectively bypasses the check
435 that non-CA certificates must not be able to issue other certificates.
437 If a "purpose" has been configured then there is a subsequent opportunity
438 for checks that the certificate is a valid CA. All of the named "purpose"
439 values implemented in libcrypto perform this check. Therefore, where
440 a purpose is set the certificate chain will still be rejected even when the
441 strict flag has been used. A purpose is set by default in libssl client and
442 server certificate verification routines, but it can be overridden or
443 removed by an application.
445 In order to be affected, an application must explicitly set the
446 X509_V_FLAG_X509_STRICT verification flag and either not set a purpose
447 for the certificate verification or, in the case of TLS client or server
448 applications, override the default purpose.
452 *) Fixed an issue where an OpenSSL TLS server may crash if sent a maliciously
453 crafted renegotiation ClientHello message from a client. If a TLSv1.2
454 renegotiation ClientHello omits the signature_algorithms extension (where
455 it was present in the initial ClientHello), but includes a
456 signature_algorithms_cert extension then a NULL pointer dereference will
457 result, leading to a crash and a denial of service attack.
459 A server is only vulnerable if it has TLSv1.2 and renegotiation enabled
460 (which is the default configuration). OpenSSL TLS clients are not impacted
463 [Peter Kästle and Samuel Sapalski]
465 Changes between 1.1.1i and 1.1.1j [16 Feb 2021]
467 *) Fixed the X509_issuer_and_serial_hash() function. It attempts to
468 create a unique hash value based on the issuer and serial number data
469 contained within an X509 certificate. However it was failing to correctly
470 handle any errors that may occur while parsing the issuer field (which might
471 occur if the issuer field is maliciously constructed). This may subsequently
472 result in a NULL pointer deref and a crash leading to a potential denial of
477 *) Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
478 padding mode to correctly check for rollback attacks. This is considered a
479 bug in OpenSSL 1.1.1 because it does not support SSLv2. In 1.0.2 this is
483 *) Fixed the EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate
484 functions. Previously they could overflow the output length argument in some
485 cases where the input length is close to the maximum permissable length for
486 an integer on the platform. In such cases the return value from the function
487 call would be 1 (indicating success), but the output length value would be
488 negative. This could cause applications to behave incorrectly or crash.
492 *) Fixed SRP_Calc_client_key so that it runs in constant time. The previous
493 implementation called BN_mod_exp without setting BN_FLG_CONSTTIME. This
494 could be exploited in a side channel attack to recover the password. Since
495 the attack is local host only this is outside of the current OpenSSL
496 threat model and therefore no CVE is assigned.
498 Thanks to Mohammed Sabt and Daniel De Almeida Braga for reporting this
502 Changes between 1.1.1h and 1.1.1i [8 Dec 2020]
504 *) Fixed NULL pointer deref in the GENERAL_NAME_cmp function
505 This function could crash if both GENERAL_NAMEs contain an EDIPARTYNAME.
506 If an attacker can control both items being compared then this could lead
507 to a possible denial of service attack. OpenSSL itself uses the
508 GENERAL_NAME_cmp function for two purposes:
509 1) Comparing CRL distribution point names between an available CRL and a
510 CRL distribution point embedded in an X509 certificate
511 2) When verifying that a timestamp response token signer matches the
512 timestamp authority name (exposed via the API functions
513 TS_RESP_verify_response and TS_RESP_verify_token)
517 *) Add support for Apple Silicon M1 Macs with the darwin64-arm64-cc target.
520 *) The security callback, which can be customised by application code, supports
521 the security operation SSL_SECOP_TMP_DH. This is defined to take an EVP_PKEY
522 in the "other" parameter. In most places this is what is passed. All these
523 places occur server side. However there was one client side call of this
524 security operation and it passed a DH object instead. This is incorrect
525 according to the definition of SSL_SECOP_TMP_DH, and is inconsistent with all
526 of the other locations. Therefore this client side call has been changed to
527 pass an EVP_PKEY instead.
530 *) In 1.1.1h, an expired trusted (root) certificate was not anymore rejected
531 when validating a certificate path. This check is restored in 1.1.1i.
534 Changes between 1.1.1g and 1.1.1h [22 Sep 2020]
536 *) Certificates with explicit curve parameters are now disallowed in
537 verification chains if the X509_V_FLAG_X509_STRICT flag is used.
540 *) The 'MinProtocol' and 'MaxProtocol' configuration commands now silently
541 ignore TLS protocol version bounds when configuring DTLS-based contexts, and
542 conversely, silently ignore DTLS protocol version bounds when configuring
543 TLS-based contexts. The commands can be repeated to set bounds of both
544 types. The same applies with the corresponding "min_protocol" and
545 "max_protocol" command-line switches, in case some application uses both TLS
548 SSL_CTX instances that are created for a fixed protocol version (e.g.
549 TLSv1_server_method()) also silently ignore version bounds. Previously
550 attempts to apply bounds to these protocol versions would result in an
551 error. Now only the "version-flexible" SSL_CTX instances are subject to
552 limits in configuration files in command-line options.
555 *) Handshake now fails if Extended Master Secret extension is dropped
559 *) Accidentally, an expired trusted (root) certificate is not anymore rejected
560 when validating a certificate path.
563 *) The Oracle Developer Studio compiler will start reporting deprecated APIs
565 Changes between 1.1.1f and 1.1.1g [21 Apr 2020]
567 *) Fixed segmentation fault in SSL_check_chain()
568 Server or client applications that call the SSL_check_chain() function
569 during or after a TLS 1.3 handshake may crash due to a NULL pointer
570 dereference as a result of incorrect handling of the
571 "signature_algorithms_cert" TLS extension. The crash occurs if an invalid
572 or unrecognised signature algorithm is received from the peer. This could
573 be exploited by a malicious peer in a Denial of Service attack.
577 *) Added AES consttime code for no-asm configurations
578 an optional constant time support for AES was added
579 when building openssl for no-asm.
580 Enable with: ./config no-asm -DOPENSSL_AES_CONST_TIME
581 Disable with: ./config no-asm -DOPENSSL_NO_AES_CONST_TIME
582 At this time this feature is by default disabled.
583 It will be enabled by default in 3.0.
586 Changes between 1.1.1e and 1.1.1f [31 Mar 2020]
588 *) Revert the change of EOF detection while reading in libssl to avoid
589 regressions in applications depending on the current way of reporting
590 the EOF. As the existing method is not fully accurate the change to
591 reporting the EOF via SSL_ERROR_SSL is kept on the current development
592 branch and will be present in the 3.0 release.
595 *) Revised BN_generate_prime_ex to not avoid factors 3..17863 in p-1
596 when primes for RSA keys are computed.
597 Since we previously always generated primes == 2 (mod 3) for RSA keys,
598 the 2-prime and 3-prime RSA modules were easy to distinguish, since
599 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
600 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
601 This avoids possible fingerprinting of newly generated RSA modules.
604 Changes between 1.1.1d and 1.1.1e [17 Mar 2020]
605 *) Properly detect EOF while reading in libssl. Previously if we hit an EOF
606 while reading in libssl then we would report an error back to the
607 application (SSL_ERROR_SYSCALL) but errno would be 0. We now add
608 an error to the stack (which means we instead return SSL_ERROR_SSL) and
609 therefore give a hint as to what went wrong.
612 *) Check that ed25519 and ed448 are allowed by the security level. Previously
613 signature algorithms not using an MD were not being checked that they were
614 allowed by the security level.
617 *) Fixed SSL_get_servername() behaviour. The behaviour of SSL_get_servername()
618 was not quite right. The behaviour was not consistent between resumption
619 and normal handshakes, and also not quite consistent with historical
620 behaviour. The behaviour in various scenarios has been clarified and
621 it has been updated to make it match historical behaviour as closely as
625 *) [VMS only] The header files that the VMS compilers include automatically,
626 __DECC_INCLUDE_PROLOGUE.H and __DECC_INCLUDE_EPILOGUE.H, use pragmas that
627 the C++ compiler doesn't understand. This is a shortcoming in the
628 compiler, but can be worked around with __cplusplus guards.
630 C++ applications that use OpenSSL libraries must be compiled using the
631 qualifier '/NAMES=(AS_IS,SHORTENED)' to be able to use all the OpenSSL
632 functions. Otherwise, only functions with symbols of less than 31
633 characters can be used, as the linker will not be able to successfully
634 resolve symbols with longer names.
637 *) Corrected the documentation of the return values from the EVP_DigestSign*
638 set of functions. The documentation mentioned negative values for some
639 errors, but this was never the case, so the mention of negative values
642 Code that followed the documentation and thereby check with something
643 like 'EVP_DigestSignInit(...) <= 0' will continue to work undisturbed.
646 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
647 used in exponentiation with 512-bit moduli. No EC algorithms are
648 affected. Analysis suggests that attacks against 2-prime RSA1024,
649 3-prime RSA1536, and DSA1024 as a result of this defect would be very
650 difficult to perform and are not believed likely. Attacks against DH512
651 are considered just feasible. However, for an attack the target would
652 have to re-use the DH512 private key, which is not recommended anyway.
653 Also applications directly using the low level API BN_mod_exp may be
654 affected if they use BN_FLG_CONSTTIME.
658 *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
659 The presence of this system service is determined at run-time.
662 *) Added newline escaping functionality to a filename when using openssl dgst.
663 This output format is to replicate the output format found in the '*sum'
664 checksum programs. This aims to preserve backward compatibility.
665 [Matt Eaton, Richard Levitte, and Paul Dale]
667 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
671 Changes between 1.1.1c and 1.1.1d [10 Sep 2019]
673 *) Fixed a fork protection issue. OpenSSL 1.1.1 introduced a rewritten random
674 number generator (RNG). This was intended to include protection in the
675 event of a fork() system call in order to ensure that the parent and child
676 processes did not share the same RNG state. However this protection was not
677 being used in the default case.
679 A partial mitigation for this issue is that the output from a high
680 precision timer is mixed into the RNG state so the likelihood of a parent
681 and child process sharing state is significantly reduced.
683 If an application already calls OPENSSL_init_crypto() explicitly using
684 OPENSSL_INIT_ATFORK then this problem does not occur at all.
686 [Matthias St. Pierre]
688 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
689 used even when parsing explicit parameters, when loading a serialized key
690 or calling `EC_GROUP_new_from_ecpkparameters()`/
691 `EC_GROUP_new_from_ecparameters()`.
692 This prevents bypass of security hardening and performance gains,
693 especially for curves with specialized EC_METHODs.
694 By default, if a key encoded with explicit parameters is loaded and later
695 serialized, the output is still encoded with explicit parameters, even if
696 internally a "named" EC_GROUP is used for computation.
699 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
700 this change, EC_GROUP_set_generator would accept order and/or cofactor as
701 NULL. After this change, only the cofactor parameter can be NULL. It also
702 does some minimal sanity checks on the passed order.
706 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
707 An attack is simple, if the first CMS_recipientInfo is valid but the
708 second CMS_recipientInfo is chosen ciphertext. If the second
709 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
710 encryption key will be replaced by garbage, and the message cannot be
711 decoded, but if the RSA decryption fails, the correct encryption key is
712 used and the recipient will not notice the attack.
713 As a work around for this potential attack the length of the decrypted
714 key must be equal to the cipher default key length, in case the
715 certifiate is not given and all recipientInfo are tried out.
716 The old behaviour can be re-enabled in the CMS code by setting the
717 CMS_DEBUG_DECRYPT flag.
721 *) Early start up entropy quality from the DEVRANDOM seed source has been
722 improved for older Linux systems. The RAND subsystem will wait for
723 /dev/random to be producing output before seeding from /dev/urandom.
724 The seeded state is stored for future library initialisations using
725 a system global shared memory segment. The shared memory identifier
726 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
727 the desired value. The default identifier is 114.
730 *) Correct the extended master secret constant on EBCDIC systems. Without this
731 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
732 negotiate EMS will fail. Unfortunately this also means that TLS connections
733 between EBCDIC systems with this fix, and EBCDIC systems without this
734 fix will fail if they negotiate EMS.
737 *) Use Windows installation paths in the mingw builds
739 Mingw isn't a POSIX environment per se, which means that Windows
740 paths should be used for installation.
744 *) Changed DH_check to accept parameters with order q and 2q subgroups.
745 With order 2q subgroups the bit 0 of the private key is not secret
746 but DH_generate_key works around that by clearing bit 0 of the
747 private key for those. This avoids leaking bit 0 of the private key.
750 *) Significantly reduce secure memory usage by the randomness pools.
753 *) Revert the DEVRANDOM_WAIT feature for Linux systems
755 The DEVRANDOM_WAIT feature added a select() call to wait for the
756 /dev/random device to become readable before reading from the
759 It turned out that this change had negative side effects on
760 performance which were not acceptable. After some discussion it
761 was decided to revert this feature and leave it up to the OS
762 resp. the platform maintainer to ensure a proper initialization
763 during early boot time.
764 [Matthias St. Pierre]
766 Changes between 1.1.1b and 1.1.1c [28 May 2019]
768 *) Add build tests for C++. These are generated files that only do one
769 thing, to include one public OpenSSL head file each. This tests that
770 the public header files can be usefully included in a C++ application.
772 This test isn't enabled by default. It can be enabled with the option
773 'enable-buildtest-c++'.
776 *) Enable SHA3 pre-hashing for ECDSA and DSA.
779 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
780 This changes the size when using the genpkey app when no size is given. It
781 fixes an omission in earlier changes that changed all RSA, DSA and DH
782 generation apps to use 2048 bits by default.
785 *) Reorganize the manual pages to consistently have RETURN VALUES,
786 EXAMPLES, SEE ALSO and HISTORY come in that order, and adjust
787 util/fix-doc-nits accordingly.
788 [Paul Yang, Joshua Lock]
790 *) Add the missing accessor EVP_PKEY_get0_engine()
793 *) Have apps like 's_client' and 's_server' output the signature scheme
794 along with other cipher suite parameters when debugging.
797 *) Make OPENSSL_config() error agnostic again.
800 *) Do the error handling in RSA decryption constant time.
803 *) Prevent over long nonces in ChaCha20-Poly1305.
805 ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input
806 for every encryption operation. RFC 7539 specifies that the nonce value
807 (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length
808 and front pads the nonce with 0 bytes if it is less than 12
809 bytes. However it also incorrectly allows a nonce to be set of up to 16
810 bytes. In this case only the last 12 bytes are significant and any
811 additional leading bytes are ignored.
813 It is a requirement of using this cipher that nonce values are
814 unique. Messages encrypted using a reused nonce value are susceptible to
815 serious confidentiality and integrity attacks. If an application changes
816 the default nonce length to be longer than 12 bytes and then makes a
817 change to the leading bytes of the nonce expecting the new value to be a
818 new unique nonce then such an application could inadvertently encrypt
819 messages with a reused nonce.
821 Additionally the ignored bytes in a long nonce are not covered by the
822 integrity guarantee of this cipher. Any application that relies on the
823 integrity of these ignored leading bytes of a long nonce may be further
824 affected. Any OpenSSL internal use of this cipher, including in SSL/TLS,
825 is safe because no such use sets such a long nonce value. However user
826 applications that use this cipher directly and set a non-default nonce
827 length to be longer than 12 bytes may be vulnerable.
829 This issue was reported to OpenSSL on 16th of March 2019 by Joran Dirk
834 *) Add DEVRANDOM_WAIT feature for Linux systems
836 On older Linux systems where the getrandom() system call is not available,
837 OpenSSL normally uses the /dev/urandom device for seeding its CSPRNG.
838 Contrary to getrandom(), the /dev/urandom device will not block during
839 early boot when the kernel CSPRNG has not been seeded yet.
841 To mitigate this known weakness, use select() to wait for /dev/random to
842 become readable before reading from /dev/urandom.
844 *) Ensure that SM2 only uses SM3 as digest algorithm
847 Changes between 1.1.1a and 1.1.1b [26 Feb 2019]
849 *) Added SCA hardening for modular field inversion in EC_GROUP through
850 a new dedicated field_inv() pointer in EC_METHOD.
851 This also addresses a leakage affecting conversions from projective
852 to affine coordinates.
853 [Billy Bob Brumley, Nicola Tuveri]
855 *) Change the info callback signals for the start and end of a post-handshake
856 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
857 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
858 confused by this and assume that a TLSv1.2 renegotiation has started. This
859 can break KeyUpdate handling. Instead we no longer signal the start and end
860 of a post handshake message exchange (although the messages themselves are
861 still signalled). This could break some applications that were expecting
862 the old signals. However without this KeyUpdate is not usable for many
866 *) Fix a bug in the computation of the endpoint-pair shared secret used
867 by DTLS over SCTP. This breaks interoperability with older versions
868 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
869 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
870 interoperability with such broken implementations. However, enabling
871 this switch breaks interoperability with correct implementations.
873 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
874 re-used X509_PUBKEY object if the second PUBKEY is malformed.
877 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
880 *) Remove the 'dist' target and add a tarball building script. The
881 'dist' target has fallen out of use, and it shouldn't be
882 necessary to configure just to create a source distribution.
885 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
887 *) Timing vulnerability in DSA signature generation
889 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
890 timing side channel attack. An attacker could use variations in the signing
891 algorithm to recover the private key.
893 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
897 *) Timing vulnerability in ECDSA signature generation
899 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
900 timing side channel attack. An attacker could use variations in the signing
901 algorithm to recover the private key.
903 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
907 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
908 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
909 are retained for backwards compatibility.
912 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
913 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
914 of two gigabytes and the error handling improved.
916 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
917 categorized as a normal bug, not a security issue, because the DRBG reseeds
918 automatically and is fully functional even without additional randomness
919 provided by the application.
921 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
923 *) Add a new ClientHello callback. Provides a callback interface that gives
924 the application the ability to adjust the nascent SSL object at the
925 earliest stage of ClientHello processing, immediately after extensions have
926 been collected but before they have been processed. In particular, this
927 callback can adjust the supported TLS versions in response to the contents
931 *) Add SM2 base algorithm support.
934 *) s390x assembly pack: add (improved) hardware-support for the following
935 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
936 aes-cfb/cfb8, aes-ecb.
939 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
940 parameter is no longer accepted, as it leads to a corrupt table. NULL
941 pem_str is reserved for alias entries only.
944 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
945 step for prime curves. The new implementation is based on formulae from
946 differential addition-and-doubling in homogeneous projective coordinates
947 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
948 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
949 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
950 to work in projective coordinates.
951 [Billy Bob Brumley, Nicola Tuveri]
953 *) Change generating and checking of primes so that the error rate of not
954 being prime depends on the intended use based on the size of the input.
955 For larger primes this will result in more rounds of Miller-Rabin.
956 The maximal error rate for primes with more than 1080 bits is lowered
958 [Kurt Roeckx, Annie Yousar]
960 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
963 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
964 moving between systems, and to avoid confusion when a Windows build is
965 done with mingw vs with MSVC. For POSIX installs, there's still a
966 symlink or copy named 'tsget' to avoid that confusion as well.
969 *) Revert blinding in ECDSA sign and instead make problematic addition
970 length-invariant. Switch even to fixed-length Montgomery multiplication.
973 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
974 step for binary curves. The new implementation is based on formulae from
975 differential addition-and-doubling in mixed Lopez-Dahab projective
976 coordinates, modified to independently blind the operands.
977 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
979 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
980 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
981 EC_METHODs to implement their own specialized "ladder step", to take
982 advantage of more favorable coordinate systems or more efficient
983 differential addition-and-doubling algorithms.
984 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
986 *) Modified the random device based seed sources to keep the relevant
987 file descriptors open rather than reopening them on each access.
988 This allows such sources to operate in a chroot() jail without
989 the associated device nodes being available. This behaviour can be
990 controlled using RAND_keep_random_devices_open().
993 *) Numerous side-channel attack mitigations have been applied. This may have
994 performance impacts for some algorithms for the benefit of improved
995 security. Specific changes are noted in this change log by their respective
999 *) AIX shared library support overhaul. Switch to AIX "natural" way of
1000 handling shared libraries, which means collecting shared objects of
1001 different versions and bitnesses in one common archive. This allows to
1002 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
1003 doesn't affect the way 3rd party applications are linked, only how
1004 multi-version installation is managed.
1007 *) Make ec_group_do_inverse_ord() more robust and available to other
1008 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
1009 mitigations are applied to the fallback BN_mod_inverse().
1010 When using this function rather than BN_mod_inverse() directly, new
1011 EC cryptosystem implementations are then safer-by-default.
1014 *) Add coordinate blinding for EC_POINT and implement projective
1015 coordinate blinding for generic prime curves as a countermeasure to
1016 chosen point SCA attacks.
1017 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
1019 *) Add blinding to ECDSA and DSA signatures to protect against side channel
1020 attacks discovered by Keegan Ryan (NCC Group).
1023 *) Enforce checking in the pkeyutl command line app to ensure that the input
1024 length does not exceed the maximum supported digest length when performing
1025 a sign, verify or verifyrecover operation.
1028 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
1029 I/O in combination with something like select() or poll() will hang. This
1030 can be turned off again using SSL_CTX_clear_mode().
1031 Many applications do not properly handle non-application data records, and
1032 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
1033 around the problems in those applications, but can also break some.
1034 It's recommended to read the manpages about SSL_read(), SSL_write(),
1035 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
1036 SSL_CTX_set_read_ahead() again.
1039 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1040 now allow empty (zero character) pass phrases.
1043 *) Apply blinding to binary field modular inversion and remove patent
1044 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
1047 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
1048 binary and prime elliptic curves.
1051 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
1052 constant time fixed point multiplication.
1055 *) Revise elliptic curve scalar multiplication with timing attack
1056 defenses: ec_wNAF_mul redirects to a constant time implementation
1057 when computing fixed point and variable point multiplication (which
1058 in OpenSSL are mostly used with secret scalars in keygen, sign,
1059 ECDH derive operations).
1060 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
1063 *) Updated CONTRIBUTING
1066 *) Updated DRBG / RAND to request nonce and additional low entropy
1067 randomness from the system.
1068 [Matthias St. Pierre]
1070 *) Updated 'openssl rehash' to use OpenSSL consistent default.
1073 *) Moved the load of the ssl_conf module to libcrypto, which helps
1074 loading engines that libssl uses before libssl is initialised.
1077 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
1080 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
1081 [Ingo Schwarze, Rich Salz]
1083 *) Added output of accepting IP address and port for 'openssl s_server'
1086 *) Added a new API for TLSv1.3 ciphersuites:
1087 SSL_CTX_set_ciphersuites()
1088 SSL_set_ciphersuites()
1091 *) Memory allocation failures consistently add an error to the error
1095 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
1096 in libcrypto when run as setuid/setgid.
1099 *) Load any config file by default when libssl is used.
1102 *) Added new public header file <openssl/rand_drbg.h> and documentation
1103 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
1104 [Matthias St. Pierre]
1106 *) QNX support removed (cannot find contributors to get their approval
1107 for the license change).
1110 *) TLSv1.3 replay protection for early data has been implemented. See the
1111 SSL_read_early_data() man page for further details.
1114 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
1115 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
1116 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
1117 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
1118 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
1119 configuration has been separated out. See the ciphers man page or the
1120 SSL_CTX_set_ciphersuites() man page for more information.
1123 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
1124 in responder mode now supports the new "-multi" option, which
1125 spawns the specified number of child processes to handle OCSP
1126 requests. The "-timeout" option now also limits the OCSP
1127 responder's patience to wait to receive the full client request
1128 on a newly accepted connection. Child processes are respawned
1129 as needed, and the CA index file is automatically reloaded
1130 when changed. This makes it possible to run the "ocsp" responder
1131 as a long-running service, making the OpenSSL CA somewhat more
1132 feature-complete. In this mode, most diagnostic messages logged
1133 after entering the event loop are logged via syslog(3) rather than
1137 *) Added support for X448 and Ed448. Heavily based on original work by
1141 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
1142 objects loaded. This adds the functions OSSL_STORE_expect() and
1143 OSSL_STORE_find() as well as needed tools to construct searches and
1144 get the search data out of them.
1147 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
1148 version of OpenSSL should review their configuration settings to ensure
1149 that they are still appropriate for TLSv1.3. For further information see:
1150 https://wiki.openssl.org/index.php/TLS1.3
1153 *) Grand redesign of the OpenSSL random generator
1155 The default RAND method now utilizes an AES-CTR DRBG according to
1156 NIST standard SP 800-90Ar1. The new random generator is essentially
1157 a port of the default random generator from the OpenSSL FIPS 2.0
1158 object module. It is a hybrid deterministic random bit generator
1159 using an AES-CTR bit stream and which seeds and reseeds itself
1160 automatically using trusted system entropy sources.
1162 Some of its new features are:
1163 o Support for multiple DRBG instances with seed chaining.
1164 o The default RAND method makes use of a DRBG.
1165 o There is a public and private DRBG instance.
1166 o The DRBG instances are fork-safe.
1167 o Keep all global DRBG instances on the secure heap if it is enabled.
1168 o The public and private DRBG instance are per thread for lock free
1170 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
1172 *) Changed Configure so it only says what it does and doesn't dump
1173 so much data. Instead, ./configdata.pm should be used as a script
1174 to display all sorts of configuration data.
1177 *) Added processing of "make variables" to Configure.
1180 *) Added SHA512/224 and SHA512/256 algorithm support.
1183 *) The last traces of Netware support, first removed in 1.1.0, have
1187 *) Get rid of Makefile.shared, and in the process, make the processing
1188 of certain files (rc.obj, or the .def/.map/.opt files produced from
1189 the ordinal files) more visible and hopefully easier to trace and
1190 debug (or make silent).
1193 *) Make it possible to have environment variable assignments as
1194 arguments to config / Configure.
1197 *) Add multi-prime RSA (RFC 8017) support.
1200 *) Add SM3 implemented according to GB/T 32905-2016
1201 [ Jack Lloyd <jack.lloyd@ribose.com>,
1202 Ronald Tse <ronald.tse@ribose.com>,
1203 Erick Borsboom <erick.borsboom@ribose.com> ]
1205 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
1206 as documented in RFC6066.
1207 Based on a patch from Tomasz Moń
1208 [Filipe Raimundo da Silva]
1210 *) Add SM4 implemented according to GB/T 32907-2016.
1211 [ Jack Lloyd <jack.lloyd@ribose.com>,
1212 Ronald Tse <ronald.tse@ribose.com>,
1213 Erick Borsboom <erick.borsboom@ribose.com> ]
1215 *) Reimplement -newreq-nodes and ERR_error_string_n; the
1216 original author does not agree with the license change.
1219 *) Add ARIA AEAD TLS support.
1222 *) Some macro definitions to support VS6 have been removed. Visual
1223 Studio 6 has not worked since 1.1.0
1226 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
1227 without clearing the errors.
1230 *) Add "atfork" functions. If building on a system that without
1231 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
1232 requirements. The RAND facility now uses/requires this.
1238 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
1239 not possible to disable entirely. However, it's still possible to
1240 disable the console reading UI method, UI_OpenSSL() (use UI_null()
1243 To disable, configure with 'no-ui-console'. 'no-ui' is still
1244 possible to use as an alias. Check at compile time with the
1245 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
1246 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
1249 *) Add a STORE module, which implements a uniform and URI based reader of
1250 stores that can contain keys, certificates, CRLs and numerous other
1251 objects. The main API is loosely based on a few stdio functions,
1252 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
1253 OSSL_STORE_error and OSSL_STORE_close.
1254 The implementation uses backends called "loaders" to implement arbitrary
1255 URI schemes. There is one built in "loader" for the 'file' scheme.
1258 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
1259 then adjusted to work on FreeBSD 8.4 as well.
1260 Enable by configuring with 'enable-devcryptoeng'. This is done by default
1261 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
1264 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
1265 util/mkerr.pl, which is adapted to allow those prefixes, leading to
1266 error code calls like this:
1268 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
1270 With this change, we claim the namespaces OSSL and OPENSSL in a manner
1271 that can be encoded in C. For the foreseeable future, this will only
1273 [Richard Levitte and Tim Hudson]
1275 *) Removed BSD cryptodev engine.
1278 *) Add a build target 'build_all_generated', to build all generated files
1279 and only that. This can be used to prepare everything that requires
1280 things like perl for a system that lacks perl and then move everything
1281 to that system and do the rest of the build there.
1284 *) In the UI interface, make it possible to duplicate the user data. This
1285 can be used by engines that need to retain the data for a longer time
1286 than just the call where this user data is passed.
1289 *) Ignore the '-named_curve auto' value for compatibility of applications
1291 [Tomas Mraz <tmraz@fedoraproject.org>]
1293 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
1294 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
1295 alerts across multiple records (some of which could be empty). In practice
1296 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
1297 prohibits this altogether and other libraries (BoringSSL, NSS) do not
1298 support this at all. Supporting it adds significant complexity to the
1299 record layer, and its removal is unlikely to cause interoperability
1303 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
1304 with Z. These are meant to replace LONG and ZLONG and to be size safe.
1305 The use of LONG and ZLONG is discouraged and scheduled for deprecation
1309 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
1310 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
1311 [Richard Levitte, Andy Polyakov]
1313 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
1317 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1318 platform rather than 'mingw'.
1321 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
1322 success if they are asked to add an object which already exists
1323 in the store. This change cascades to other functions which load
1324 certificates and CRLs.
1327 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
1328 facilitate stack unwinding even from assembly subroutines.
1331 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
1332 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
1335 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1336 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1337 which is the minimum version we support.
1340 *) Certificate time validation (X509_cmp_time) enforces stricter
1341 compliance with RFC 5280. Fractional seconds and timezone offsets
1342 are no longer allowed.
1345 *) Add support for ARIA
1348 *) s_client will now send the Server Name Indication (SNI) extension by
1349 default unless the new "-noservername" option is used. The server name is
1350 based on the host provided to the "-connect" option unless overridden by
1351 using "-servername".
1354 *) Add support for SipHash
1357 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
1358 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
1359 prevent issues where no progress is being made and the peer continually
1360 sends unrecognised record types, using up resources processing them.
1363 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
1364 using the algorithm defined in
1365 https://www.akkadia.org/drepper/SHA-crypt.txt
1368 *) Heartbeat support has been removed; the ABI is changed for now.
1369 [Richard Levitte, Rich Salz]
1371 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
1374 *) The RSA "null" method, which was partially supported to avoid patent
1375 issues, has been replaced to always returns NULL.
1379 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
1381 *) Client DoS due to large DH parameter
1383 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
1384 malicious server can send a very large prime value to the client. This will
1385 cause the client to spend an unreasonably long period of time generating a
1386 key for this prime resulting in a hang until the client has finished. This
1387 could be exploited in a Denial Of Service attack.
1389 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
1393 *) Cache timing vulnerability in RSA Key Generation
1395 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
1396 a cache timing side channel attack. An attacker with sufficient access to
1397 mount cache timing attacks during the RSA key generation process could
1398 recover the private key.
1400 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
1401 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
1405 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
1406 parameter is no longer accepted, as it leads to a corrupt table. NULL
1407 pem_str is reserved for alias entries only.
1410 *) Revert blinding in ECDSA sign and instead make problematic addition
1411 length-invariant. Switch even to fixed-length Montgomery multiplication.
1414 *) Change generating and checking of primes so that the error rate of not
1415 being prime depends on the intended use based on the size of the input.
1416 For larger primes this will result in more rounds of Miller-Rabin.
1417 The maximal error rate for primes with more than 1080 bits is lowered
1419 [Kurt Roeckx, Annie Yousar]
1421 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
1424 *) Add blinding to ECDSA and DSA signatures to protect against side channel
1425 attacks discovered by Keegan Ryan (NCC Group).
1428 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1429 now allow empty (zero character) pass phrases.
1432 *) Certificate time validation (X509_cmp_time) enforces stricter
1433 compliance with RFC 5280. Fractional seconds and timezone offsets
1434 are no longer allowed.
1437 *) Fixed a text canonicalisation bug in CMS
1439 Where a CMS detached signature is used with text content the text goes
1440 through a canonicalisation process first prior to signing or verifying a
1441 signature. This process strips trailing space at the end of lines, converts
1442 line terminators to CRLF and removes additional trailing line terminators
1443 at the end of a file. A bug in the canonicalisation process meant that
1444 some characters, such as form-feed, were incorrectly treated as whitespace
1445 and removed. This is contrary to the specification (RFC5485). This fix
1446 could mean that detached text data signed with an earlier version of
1447 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
1448 signed with a fixed OpenSSL may fail to verify with an earlier version of
1449 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
1450 and use the "-binary" flag (for the "cms" command line application) or set
1451 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
1454 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
1456 *) Constructed ASN.1 types with a recursive definition could exceed the stack
1458 Constructed ASN.1 types with a recursive definition (such as can be found
1459 in PKCS7) could eventually exceed the stack given malicious input with
1460 excessive recursion. This could result in a Denial Of Service attack. There
1461 are no such structures used within SSL/TLS that come from untrusted sources
1462 so this is considered safe.
1464 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
1469 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
1471 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
1472 effectively reduced to only comparing the least significant bit of each
1473 byte. This allows an attacker to forge messages that would be considered as
1474 authenticated in an amount of tries lower than that guaranteed by the
1475 security claims of the scheme. The module can only be compiled by the
1476 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
1478 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
1483 *) Add a build target 'build_all_generated', to build all generated files
1484 and only that. This can be used to prepare everything that requires
1485 things like perl for a system that lacks perl and then move everything
1486 to that system and do the rest of the build there.
1489 *) Backport SSL_OP_NO_RENGOTIATION
1491 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1492 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1493 changes this is no longer possible in 1.1.0. Therefore the new
1494 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1495 1.1.0 to provide equivalent functionality.
1497 Note that if an application built against 1.1.0h headers (or above) is run
1498 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1499 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1502 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1506 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1508 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1509 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1510 Analysis suggests that attacks against RSA and DSA as a result of this
1511 defect would be very difficult to perform and are not believed likely.
1512 Attacks against DH1024 are considered just feasible, because most of the
1513 work necessary to deduce information about a private key may be performed
1514 offline. The amount of resources required for such an attack would be
1515 significant. However, for an attack on TLS to be meaningful, the server
1516 would have to share the DH1024 private key among multiple clients, which is
1517 no longer an option since CVE-2016-0701.
1519 This only affects processors that support the AVX2 but not ADX extensions
1520 like Intel Haswell (4th generation).
1522 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1523 was originally found via the OSS-Fuzz project.
1527 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1529 *) bn_sqrx8x_internal carry bug on x86_64
1531 There is a carry propagating bug in the x86_64 Montgomery squaring
1532 procedure. No EC algorithms are affected. Analysis suggests that attacks
1533 against RSA and DSA as a result of this defect would be very difficult to
1534 perform and are not believed likely. Attacks against DH are considered just
1535 feasible (although very difficult) because most of the work necessary to
1536 deduce information about a private key may be performed offline. The amount
1537 of resources required for such an attack would be very significant and
1538 likely only accessible to a limited number of attackers. An attacker would
1539 additionally need online access to an unpatched system using the target
1540 private key in a scenario with persistent DH parameters and a private
1541 key that is shared between multiple clients.
1543 This only affects processors that support the BMI1, BMI2 and ADX extensions
1544 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1546 This issue was reported to OpenSSL by the OSS-Fuzz project.
1550 *) Malformed X.509 IPAddressFamily could cause OOB read
1552 If an X.509 certificate has a malformed IPAddressFamily extension,
1553 OpenSSL could do a one-byte buffer overread. The most likely result
1554 would be an erroneous display of the certificate in text format.
1556 This issue was reported to OpenSSL by the OSS-Fuzz project.
1560 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1562 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1563 platform rather than 'mingw'.
1566 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1567 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1568 which is the minimum version we support.
1571 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1573 *) Encrypt-Then-Mac renegotiation crash
1575 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1576 negotiated where it was not in the original handshake (or vice-versa) then
1577 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1578 and servers are affected.
1580 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1584 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1586 *) Truncated packet could crash via OOB read
1588 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1589 cipher is being used, then a truncated packet can cause that host to
1590 perform an out-of-bounds read, usually resulting in a crash.
1592 This issue was reported to OpenSSL by Robert Święcki of Google.
1596 *) Bad (EC)DHE parameters cause a client crash
1598 If a malicious server supplies bad parameters for a DHE or ECDHE key
1599 exchange then this can result in the client attempting to dereference a
1600 NULL pointer leading to a client crash. This could be exploited in a Denial
1603 This issue was reported to OpenSSL by Guido Vranken.
1607 *) BN_mod_exp may produce incorrect results on x86_64
1609 There is a carry propagating bug in the x86_64 Montgomery squaring
1610 procedure. No EC algorithms are affected. Analysis suggests that attacks
1611 against RSA and DSA as a result of this defect would be very difficult to
1612 perform and are not believed likely. Attacks against DH are considered just
1613 feasible (although very difficult) because most of the work necessary to
1614 deduce information about a private key may be performed offline. The amount
1615 of resources required for such an attack would be very significant and
1616 likely only accessible to a limited number of attackers. An attacker would
1617 additionally need online access to an unpatched system using the target
1618 private key in a scenario with persistent DH parameters and a private
1619 key that is shared between multiple clients. For example this can occur by
1620 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1621 similar to CVE-2015-3193 but must be treated as a separate problem.
1623 This issue was reported to OpenSSL by the OSS-Fuzz project.
1627 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1629 *) ChaCha20/Poly1305 heap-buffer-overflow
1631 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1632 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1633 crash. This issue is not considered to be exploitable beyond a DoS.
1635 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1639 *) CMS Null dereference
1641 Applications parsing invalid CMS structures can crash with a NULL pointer
1642 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1643 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1644 structure callback if an attempt is made to free certain invalid encodings.
1645 Only CHOICE structures using a callback which do not handle NULL value are
1648 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1652 *) Montgomery multiplication may produce incorrect results
1654 There is a carry propagating bug in the Broadwell-specific Montgomery
1655 multiplication procedure that handles input lengths divisible by, but
1656 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1657 and DH private keys are impossible. This is because the subroutine in
1658 question is not used in operations with the private key itself and an input
1659 of the attacker's direct choice. Otherwise the bug can manifest itself as
1660 transient authentication and key negotiation failures or reproducible
1661 erroneous outcome of public-key operations with specially crafted input.
1662 Among EC algorithms only Brainpool P-512 curves are affected and one
1663 presumably can attack ECDH key negotiation. Impact was not analyzed in
1664 detail, because pre-requisites for attack are considered unlikely. Namely
1665 multiple clients have to choose the curve in question and the server has to
1666 share the private key among them, neither of which is default behaviour.
1667 Even then only clients that chose the curve will be affected.
1669 This issue was publicly reported as transient failures and was not
1670 initially recognized as a security issue. Thanks to Richard Morgan for
1671 providing reproducible case.
1675 *) Removed automatic addition of RPATH in shared libraries and executables,
1676 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1679 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1681 *) Fix Use After Free for large message sizes
1683 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1684 message larger than approx 16k is received then the underlying buffer to
1685 store the incoming message is reallocated and moved. Unfortunately a
1686 dangling pointer to the old location is left which results in an attempt to
1687 write to the previously freed location. This is likely to result in a
1688 crash, however it could potentially lead to execution of arbitrary code.
1690 This issue only affects OpenSSL 1.1.0a.
1692 This issue was reported to OpenSSL by Robert Święcki.
1696 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1698 *) OCSP Status Request extension unbounded memory growth
1700 A malicious client can send an excessively large OCSP Status Request
1701 extension. If that client continually requests renegotiation, sending a
1702 large OCSP Status Request extension each time, then there will be unbounded
1703 memory growth on the server. This will eventually lead to a Denial Of
1704 Service attack through memory exhaustion. Servers with a default
1705 configuration are vulnerable even if they do not support OCSP. Builds using
1706 the "no-ocsp" build time option are not affected.
1708 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1712 *) SSL_peek() hang on empty record
1714 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1715 sends an empty record. This could be exploited by a malicious peer in a
1716 Denial Of Service attack.
1718 This issue was reported to OpenSSL by Alex Gaynor.
1722 *) Excessive allocation of memory in tls_get_message_header() and
1723 dtls1_preprocess_fragment()
1725 A (D)TLS message includes 3 bytes for its length in the header for the
1726 message. This would allow for messages up to 16Mb in length. Messages of
1727 this length are excessive and OpenSSL includes a check to ensure that a
1728 peer is sending reasonably sized messages in order to avoid too much memory
1729 being consumed to service a connection. A flaw in the logic of version
1730 1.1.0 means that memory for the message is allocated too early, prior to
1731 the excessive message length check. Due to way memory is allocated in
1732 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1733 to service a connection. This could lead to a Denial of Service through
1734 memory exhaustion. However, the excessive message length check still takes
1735 place, and this would cause the connection to immediately fail. Assuming
1736 that the application calls SSL_free() on the failed connection in a timely
1737 manner then the 21Mb of allocated memory will then be immediately freed
1738 again. Therefore the excessive memory allocation will be transitory in
1739 nature. This then means that there is only a security impact if:
1741 1) The application does not call SSL_free() in a timely manner in the event
1742 that the connection fails
1744 2) The application is working in a constrained environment where there is
1745 very little free memory
1747 3) The attacker initiates multiple connection attempts such that there are
1748 multiple connections in a state where memory has been allocated for the
1749 connection; SSL_free() has not yet been called; and there is insufficient
1750 memory to service the multiple requests.
1752 Except in the instance of (1) above any Denial Of Service is likely to be
1753 transitory because as soon as the connection fails the memory is
1754 subsequently freed again in the SSL_free() call. However there is an
1755 increased risk during this period of application crashes due to the lack of
1756 memory - which would then mean a more serious Denial of Service.
1758 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1759 (CVE-2016-6307 and CVE-2016-6308)
1762 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1763 had to be removed. Primary reason is that vendor assembler can't
1764 assemble our modules with -KPIC flag. As result it, assembly
1765 support, was not even available as option. But its lack means
1766 lack of side-channel resistant code, which is incompatible with
1767 security by todays standards. Fortunately gcc is readily available
1768 prepackaged option, which we firmly point at...
1771 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1773 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1774 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1775 (to any value) allows Windows user to access PKCS#12 file generated
1776 with Windows CryptoAPI and protected with non-ASCII password, as well
1777 as files generated under UTF-8 locale on Linux also protected with
1781 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1782 have been disabled by default and removed from DEFAULT, just like RC4.
1783 See the RC4 item below to re-enable both.
1786 *) The method for finding the storage location for the Windows RAND seed file
1787 has changed. First we check %RANDFILE%. If that is not set then we check
1788 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1789 all else fails we fall back to C:\.
1792 *) The EVP_EncryptUpdate() function has had its return type changed from void
1793 to int. A return of 0 indicates and error while a return of 1 indicates
1797 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1798 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1799 off the constant time implementation for RSA, DSA and DH have been made
1800 no-ops and deprecated.
1803 *) Windows RAND implementation was simplified to only get entropy by
1804 calling CryptGenRandom(). Various other RAND-related tickets
1806 [Joseph Wylie Yandle, Rich Salz]
1808 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1809 and OPENSSL_LH_, respectively. The old names are available
1810 with API compatibility. They new names are now completely documented.
1813 *) Unify TYPE_up_ref(obj) methods signature.
1814 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1815 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1816 int (instead of void) like all others TYPE_up_ref() methods.
1817 So now these methods also check the return value of CRYPTO_atomic_add(),
1818 and the validity of object reference counter.
1819 [fdasilvayy@gmail.com]
1821 *) With Windows Visual Studio builds, the .pdb files are installed
1822 alongside the installed libraries and executables. For a static
1823 library installation, ossl_static.pdb is the associate compiler
1824 generated .pdb file to be used when linking programs.
1827 *) Remove openssl.spec. Packaging files belong with the packagers.
1830 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1831 recognise x86_64 architectures automatically. You can still decide
1832 to build for a different bitness with the environment variable
1833 KERNEL_BITS (can be 32 or 64), for example:
1835 KERNEL_BITS=32 ./config
1839 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1840 256 bit AES and HMAC with SHA256.
1843 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1846 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1849 *) To enable users to have their own config files and build file templates,
1850 Configure looks in the directory indicated by the environment variable
1851 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1852 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1853 name and is used as is.
1856 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1857 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1858 X509_CERT_FILE_CTX was removed.
1861 *) "shared" builds are now the default. To create only static libraries use
1862 the "no-shared" Configure option.
1865 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1866 All of these option have not worked for some while and are fundamental
1870 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1871 global cleanup functions are no longer required because they are handled
1872 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1873 Explicitly de-initing can cause problems (e.g. where a library that uses
1874 OpenSSL de-inits, but an application is still using it). The affected
1875 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1876 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1877 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1878 COMP_zlib_cleanup().
1881 *) --strict-warnings no longer enables runtime debugging options
1882 such as REF_DEBUG. Instead, debug options are automatically
1883 enabled with '--debug' builds.
1884 [Andy Polyakov, Emilia Käsper]
1886 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1887 have been moved out of the public header files. New functions for managing
1888 these have been added.
1891 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1892 objects have been moved out of the public header files. New
1893 functions for managing these have been added.
1896 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1897 have been moved out of the public header files. New functions for managing
1898 these have been added.
1901 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1902 moved out of the public header files. New functions for managing these
1906 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1909 *) Removed the mk1mf build scripts.
1912 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1913 it is always safe to #include a header now.
1916 *) Removed the aged BC-32 config and all its supporting scripts
1919 *) Removed support for Ultrix, Netware, and OS/2.
1922 *) Add support for HKDF.
1923 [Alessandro Ghedini]
1925 *) Add support for blake2b and blake2s
1928 *) Added support for "pipelining". Ciphers that have the
1929 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1930 encryptions/decryptions simultaneously. There are currently no built-in
1931 ciphers with this property but the expectation is that engines will be able
1932 to offer it to significantly improve throughput. Support has been extended
1933 into libssl so that multiple records for a single connection can be
1934 processed in one go (for >=TLS 1.1).
1937 *) Added the AFALG engine. This is an async capable engine which is able to
1938 offload work to the Linux kernel. In this initial version it only supports
1939 AES128-CBC. The kernel must be version 4.1.0 or greater.
1942 *) OpenSSL now uses a new threading API. It is no longer necessary to
1943 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1944 are two supported threading models: pthreads and windows threads. It is
1945 also possible to configure OpenSSL at compile time for "no-threads". The
1946 old threading API should no longer be used. The functions have been
1947 replaced with "no-op" compatibility macros.
1948 [Alessandro Ghedini, Matt Caswell]
1950 *) Modify behavior of ALPN to invoke callback after SNI/servername
1951 callback, such that updates to the SSL_CTX affect ALPN.
1954 *) Add SSL_CIPHER queries for authentication and key-exchange.
1957 *) Changes to the DEFAULT cipherlist:
1958 - Prefer (EC)DHE handshakes over plain RSA.
1959 - Prefer AEAD ciphers over legacy ciphers.
1960 - Prefer ECDSA over RSA when both certificates are available.
1961 - Prefer TLSv1.2 ciphers/PRF.
1962 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1966 *) Change the ECC default curve list to be this, in order: x25519,
1967 secp256r1, secp521r1, secp384r1.
1970 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1971 disabled by default. They can be re-enabled using the
1972 enable-weak-ssl-ciphers option to Configure.
1975 *) If the server has ALPN configured, but supports no protocols that the
1976 client advertises, send a fatal "no_application_protocol" alert.
1977 This behaviour is SHALL in RFC 7301, though it isn't universally
1978 implemented by other servers.
1981 *) Add X25519 support.
1982 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1983 for public and private key encoding using the format documented in
1984 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1985 key generation and key derivation.
1987 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1991 *) Deprecate SRP_VBASE_get_by_user.
1992 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1993 In order to fix an unavoidable memory leak (CVE-2016-0798),
1994 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1995 seed, even if the seed is configured.
1997 Users should use SRP_VBASE_get1_by_user instead. Note that in
1998 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1999 also that even though configuring the SRP seed attempts to hide
2000 invalid usernames by continuing the handshake with fake
2001 credentials, this behaviour is not constant time and no strong
2002 guarantees are made that the handshake is indistinguishable from
2003 that of a valid user.
2006 *) Configuration change; it's now possible to build dynamic engines
2007 without having to build shared libraries and vice versa. This
2008 only applies to the engines in engines/, those in crypto/engine/
2009 will always be built into libcrypto (i.e. "static").
2011 Building dynamic engines is enabled by default; to disable, use
2012 the configuration option "disable-dynamic-engine".
2014 The only requirements for building dynamic engines are the
2015 presence of the DSO module and building with position independent
2016 code, so they will also automatically be disabled if configuring
2017 with "disable-dso" or "disable-pic".
2019 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
2020 are also taken away from openssl/opensslconf.h, as they are
2024 *) Configuration change; if there is a known flag to compile
2025 position independent code, it will always be applied on the
2026 libcrypto and libssl object files, and never on the application
2027 object files. This means other libraries that use routines from
2028 libcrypto / libssl can be made into shared libraries regardless
2029 of how OpenSSL was configured.
2031 If this isn't desirable, the configuration options "disable-pic"
2032 or "no-pic" can be used to disable the use of PIC. This will
2033 also disable building shared libraries and dynamic engines.
2036 *) Removed JPAKE code. It was experimental and has no wide use.
2039 *) The INSTALL_PREFIX Makefile variable has been renamed to
2040 DESTDIR. That makes for less confusion on what this variable
2041 is for. Also, the configuration option --install_prefix is
2045 *) Heartbeat for TLS has been removed and is disabled by default
2046 for DTLS; configure with enable-heartbeats. Code that uses the
2047 old #define's might need to be updated.
2048 [Emilia Käsper, Rich Salz]
2050 *) Rename REF_CHECK to REF_DEBUG.
2053 *) New "unified" build system
2055 The "unified" build system is aimed to be a common system for all
2056 platforms we support. With it comes new support for VMS.
2058 This system builds supports building in a different directory tree
2059 than the source tree. It produces one Makefile (for unix family
2060 or lookalikes), or one descrip.mms (for VMS).
2062 The source of information to make the Makefile / descrip.mms is
2063 small files called 'build.info', holding the necessary
2064 information for each directory with source to compile, and a
2065 template in Configurations, like unix-Makefile.tmpl or
2068 With this change, the library names were also renamed on Windows
2069 and on VMS. They now have names that are closer to the standard
2070 on Unix, and include the major version number, and in certain
2071 cases, the architecture they are built for. See "Notes on shared
2072 libraries" in INSTALL.
2074 We rely heavily on the perl module Text::Template.
2077 *) Added support for auto-initialisation and de-initialisation of the library.
2078 OpenSSL no longer requires explicit init or deinit routines to be called,
2079 except in certain circumstances. See the OPENSSL_init_crypto() and
2080 OPENSSL_init_ssl() man pages for further information.
2083 *) The arguments to the DTLSv1_listen function have changed. Specifically the
2084 "peer" argument is now expected to be a BIO_ADDR object.
2086 *) Rewrite of BIO networking library. The BIO library lacked consistent
2087 support of IPv6, and adding it required some more extensive
2088 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
2089 which hold all types of addresses and chains of address information.
2090 It also introduces a new API, with functions like BIO_socket,
2091 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
2092 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
2093 have been adapted accordingly.
2096 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
2100 *) CRIME protection: disable compression by default, even if OpenSSL is
2101 compiled with zlib enabled. Applications can still enable compression
2102 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
2103 using the SSL_CONF library to configure compression.
2106 *) The signature of the session callback configured with
2107 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
2108 was explicitly marked as 'const unsigned char*' instead of
2112 *) Always DPURIFY. Remove the use of uninitialized memory in the
2113 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
2116 *) Removed many obsolete configuration items, including
2117 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
2118 MD2_CHAR, MD2_INT, MD2_LONG
2120 IDEA_SHORT, IDEA_LONG
2121 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
2122 [Rich Salz, with advice from Andy Polyakov]
2124 *) Many BN internals have been moved to an internal header file.
2125 [Rich Salz with help from Andy Polyakov]
2127 *) Configuration and writing out the results from it has changed.
2128 Files such as Makefile include/openssl/opensslconf.h and are now
2129 produced through general templates, such as Makefile.in and
2130 crypto/opensslconf.h.in and some help from the perl module
2133 Also, the center of configuration information is no longer
2134 Makefile. Instead, Configure produces a perl module in
2135 configdata.pm which holds most of the config data (in the hash
2136 table %config), the target data that comes from the target
2137 configuration in one of the Configurations/*.conf files (in
2141 *) To clarify their intended purposes, the Configure options
2142 --prefix and --openssldir change their semantics, and become more
2143 straightforward and less interdependent.
2145 --prefix shall be used exclusively to give the location INSTALLTOP
2146 where programs, scripts, libraries, include files and manuals are
2147 going to be installed. The default is now /usr/local.
2149 --openssldir shall be used exclusively to give the default
2150 location OPENSSLDIR where certificates, private keys, CRLs are
2151 managed. This is also where the default openssl.cnf gets
2153 If the directory given with this option is a relative path, the
2154 values of both the --prefix value and the --openssldir value will
2155 be combined to become OPENSSLDIR.
2156 The default for --openssldir is INSTALLTOP/ssl.
2158 Anyone who uses --openssldir to specify where OpenSSL is to be
2159 installed MUST change to use --prefix instead.
2162 *) The GOST engine was out of date and therefore it has been removed. An up
2163 to date GOST engine is now being maintained in an external repository.
2164 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
2165 support for GOST ciphersuites (these are only activated if a GOST engine
2169 *) EGD is no longer supported by default; use enable-egd when
2171 [Ben Kaduk and Rich Salz]
2173 *) The distribution now has Makefile.in files, which are used to
2174 create Makefile's when Configure is run. *Configure must be run
2175 before trying to build now.*
2178 *) The return value for SSL_CIPHER_description() for error conditions
2182 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
2184 Obtaining and performing DNSSEC validation of TLSA records is
2185 the application's responsibility. The application provides
2186 the TLSA records of its choice to OpenSSL, and these are then
2187 used to authenticate the peer.
2189 The TLSA records need not even come from DNS. They can, for
2190 example, be used to implement local end-entity certificate or
2191 trust-anchor "pinning", where the "pin" data takes the form
2192 of TLSA records, which can augment or replace verification
2193 based on the usual WebPKI public certification authorities.
2196 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
2197 continues to support deprecated interfaces in default builds.
2198 However, applications are strongly advised to compile their
2199 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
2200 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
2201 or the 1.1.0 releases.
2203 In environments in which all applications have been ported to
2204 not use any deprecated interfaces OpenSSL's Configure script
2205 should be used with the --api=1.1.0 option to entirely remove
2206 support for the deprecated features from the library and
2207 unconditionally disable them in the installed headers.
2208 Essentially the same effect can be achieved with the "no-deprecated"
2209 argument to Configure, except that this will always restrict
2210 the build to just the latest API, rather than a fixed API
2213 As applications are ported to future revisions of the API,
2214 they should update their compile-time OPENSSL_API_COMPAT define
2215 accordingly, but in most cases should be able to continue to
2216 compile with later releases.
2218 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
2219 0x10000000L and 0x00908000L, respectively. However those
2220 versions did not support the OPENSSL_API_COMPAT feature, and
2221 so applications are not typically tested for explicit support
2222 of just the undeprecated features of either release.
2225 *) Add support for setting the minimum and maximum supported protocol.
2226 It can bet set via the SSL_set_min_proto_version() and
2227 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
2228 MaxProtocol. It's recommended to use the new APIs to disable
2229 protocols instead of disabling individual protocols using
2230 SSL_set_options() or SSL_CONF's Protocol. This change also
2231 removes support for disabling TLS 1.2 in the OpenSSL TLS
2232 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
2235 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
2238 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
2239 and integrates ECDSA and ECDH functionality into EC. Implementations can
2240 now redirect key generation and no longer need to convert to or from
2243 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
2244 include the ec.h header file instead.
2247 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
2248 ciphers who are no longer supported and drops support the ephemeral RSA key
2249 exchange. The LOW ciphers currently doesn't have any ciphers in it.
2252 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
2253 opaque. For HMAC_CTX, the following constructors and destructors
2256 HMAC_CTX *HMAC_CTX_new(void);
2257 void HMAC_CTX_free(HMAC_CTX *ctx);
2259 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
2260 destroy such methods has been added. See EVP_MD_meth_new(3) and
2261 EVP_CIPHER_meth_new(3) for documentation.
2264 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
2265 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
2266 EVP_MD_CTX_reset() should be called instead to reinitialise
2267 an already created structure.
2268 2) For consistency with the majority of our object creators and
2269 destructors, EVP_MD_CTX_(create|destroy) were renamed to
2270 EVP_MD_CTX_(new|free). The old names are retained as macros
2271 for deprecated builds.
2274 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
2275 cryptographic operations to be performed asynchronously as long as an
2276 asynchronous capable engine is used. See the ASYNC_start_job() man page for
2277 further details. Libssl has also had this capability integrated with the
2278 introduction of the new mode SSL_MODE_ASYNC and associated error
2279 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
2280 pages. This work was developed in partnership with Intel Corp.
2283 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
2284 always enabled now. If you want to disable the support you should
2285 exclude it using the list of supported ciphers. This also means that the
2286 "-no_ecdhe" option has been removed from s_server.
2289 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
2290 SSL_{CTX_}set1_curves() which can set a list.
2293 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
2294 curve you want to support using SSL_{CTX_}set1_curves().
2297 *) State machine rewrite. The state machine code has been significantly
2298 refactored in order to remove much duplication of code and solve issues
2299 with the old code (see ssl/statem/README for further details). This change
2300 does have some associated API changes. Notably the SSL_state() function
2301 has been removed and replaced by SSL_get_state which now returns an
2302 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
2303 altogether. The previous handshake states defined in ssl.h and ssl3.h have
2307 *) All instances of the string "ssleay" in the public API were replaced
2308 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
2309 Some error codes related to internal RSA_eay API's were renamed.
2312 *) The demo files in crypto/threads were moved to demo/threads.
2315 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
2317 [Matt Caswell, Rich Salz]
2319 *) New ASN.1 embed macro.
2321 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
2322 structure is not allocated: it is part of the parent. That is instead of
2330 This reduces memory fragmentation and make it impossible to accidentally
2331 set a mandatory field to NULL.
2333 This currently only works for some fields specifically a SEQUENCE, CHOICE,
2334 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
2335 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
2339 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
2342 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
2343 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
2344 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
2345 DES and RC4 ciphersuites.
2348 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2349 This changes the decoding behaviour for some invalid messages,
2350 though the change is mostly in the more lenient direction, and
2351 legacy behaviour is preserved as much as possible.
2354 *) Fix no-stdio build.
2355 [ David Woodhouse <David.Woodhouse@intel.com> and also
2356 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
2358 *) New testing framework
2359 The testing framework has been largely rewritten and is now using
2360 perl and the perl modules Test::Harness and an extended variant of
2361 Test::More called OpenSSL::Test to do its work. All test scripts in
2362 test/ have been rewritten into test recipes, and all direct calls to
2363 executables in test/Makefile have become individual recipes using the
2364 simplified testing OpenSSL::Test::Simple.
2366 For documentation on our testing modules, do:
2368 perldoc test/testlib/OpenSSL/Test/Simple.pm
2369 perldoc test/testlib/OpenSSL/Test.pm
2373 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
2374 are used; the latter aborts on memory leaks (usually checked on exit).
2375 Some undocumented "set malloc, etc., hooks" functions were removed
2376 and others were changed. All are now documented.
2379 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2381 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2383 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
2384 from RFC4279, RFC4785, RFC5487, RFC5489.
2386 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
2387 original RSA_PSK patch.
2390 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
2391 era flag was never set throughout the codebase (only read). Also removed
2392 SSL3_FLAGS_POP_BUFFER which was only used if
2393 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
2396 *) Changed the default name options in the "ca", "crl", "req" and "x509"
2397 to be "oneline" instead of "compat".
2400 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
2401 not aware of clients that still exhibit this bug, and the workaround
2402 hasn't been working properly for a while.
2405 *) The return type of BIO_number_read() and BIO_number_written() as well as
2406 the corresponding num_read and num_write members in the BIO structure has
2407 changed from unsigned long to uint64_t. On platforms where an unsigned
2408 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
2412 *) Given the pervasive nature of TLS extensions it is inadvisable to run
2413 OpenSSL without support for them. It also means that maintaining
2414 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
2415 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
2418 *) Removed support for the two export grade static DH ciphersuites
2419 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
2420 were newly added (along with a number of other static DH ciphersuites) to
2421 1.0.2. However the two export ones have *never* worked since they were
2422 introduced. It seems strange in any case to be adding new export
2423 ciphersuites, and given "logjam" it also does not seem correct to fix them.
2426 *) Version negotiation has been rewritten. In particular SSLv23_method(),
2427 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
2428 and turned into macros which simply call the new preferred function names
2429 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
2430 should use the new names instead. Also as part of this change the ssl23.h
2431 header file has been removed.
2434 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
2435 code and the associated standard is no longer considered fit-for-purpose.
2438 *) RT2547 was closed. When generating a private key, try to make the
2439 output file readable only by the owner. This behavior change might
2440 be noticeable when interacting with other software.
2442 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
2446 *) Added HTTP GET support to the ocsp command.
2449 *) Changed default digest for the dgst and enc commands from MD5 to
2453 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
2456 *) Added support for TLS extended master secret from
2457 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
2458 initial patch which was a great help during development.
2461 *) All libssl internal structures have been removed from the public header
2462 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
2463 now redundant). Users should not attempt to access internal structures
2464 directly. Instead they should use the provided API functions.
2467 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
2468 Access to deprecated functions can be re-enabled by running config with
2469 "enable-deprecated". In addition applications wishing to use deprecated
2470 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
2471 will, by default, disable some transitive includes that previously existed
2472 in the header files (e.g. ec.h will no longer, by default, include bn.h)
2475 *) Added support for OCB mode. OpenSSL has been granted a patent license
2476 compatible with the OpenSSL license for use of OCB. Details are available
2477 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
2478 for OCB can be removed by calling config with no-ocb.
2481 *) SSLv2 support has been removed. It still supports receiving a SSLv2
2482 compatible client hello.
2485 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2486 done while fixing the error code for the key-too-small case.
2487 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2489 *) CA.sh has been removed; use CA.pl instead.
2492 *) Removed old DES API.
2495 *) Remove various unsupported platforms:
2501 Sinix/ReliantUNIX RM400
2506 16-bit platforms such as WIN16
2509 *) Clean up OPENSSL_NO_xxx #define's
2510 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2511 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2512 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2513 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2514 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2515 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2516 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2517 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2518 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2519 Remove MS_STATIC; it's a relic from platforms <32 bits.
2522 *) Cleaned up dead code
2523 Remove all but one '#ifdef undef' which is to be looked at.
2526 *) Clean up calling of xxx_free routines.
2527 Just like free(), fix most of the xxx_free routines to accept
2528 NULL. Remove the non-null checks from callers. Save much code.
2531 *) Add secure heap for storage of private keys (when possible).
2532 Add BIO_s_secmem(), CBIGNUM, etc.
2533 Contributed by Akamai Technologies under our Corporate CLA.
2536 *) Experimental support for a new, fast, unbiased prime candidate generator,
2537 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2538 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2540 *) New output format NSS in the sess_id command line tool. This allows
2541 exporting the session id and the master key in NSS keylog format.
2542 [Martin Kaiser <martin@kaiser.cx>]
2544 *) Harmonize version and its documentation. -f flag is used to display
2546 [mancha <mancha1@zoho.com>]
2548 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2549 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2550 [mancha <mancha1@zoho.com>]
2552 *) Fix some double frees. These are not thought to be exploitable.
2553 [mancha <mancha1@zoho.com>]
2555 *) A missing bounds check in the handling of the TLS heartbeat extension
2556 can be used to reveal up to 64k of memory to a connected client or
2559 Thanks for Neel Mehta of Google Security for discovering this bug and to
2560 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2561 preparing the fix (CVE-2014-0160)
2562 [Adam Langley, Bodo Moeller]
2564 *) Fix for the attack described in the paper "Recovering OpenSSL
2565 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2566 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2567 http://eprint.iacr.org/2014/140
2569 Thanks to Yuval Yarom and Naomi Benger for discovering this
2570 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2571 [Yuval Yarom and Naomi Benger]
2573 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2574 this fixes a limitation in previous versions of OpenSSL.
2577 *) Experimental encrypt-then-mac support.
2579 Experimental support for encrypt then mac from
2580 draft-gutmann-tls-encrypt-then-mac-02.txt
2582 To enable it set the appropriate extension number (0x42 for the test
2583 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2585 For non-compliant peers (i.e. just about everything) this should have no
2588 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2592 *) Add EVP support for key wrapping algorithms, to avoid problems with
2593 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2594 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2595 algorithms and include tests cases.
2598 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2602 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2603 MGF1 digest and OAEP label.
2606 *) Make openssl verify return errors.
2607 [Chris Palmer <palmer@google.com> and Ben Laurie]
2609 *) New function ASN1_TIME_diff to calculate the difference between two
2610 ASN1_TIME structures or one structure and the current time.
2613 *) Update fips_test_suite to support multiple command line options. New
2614 test to induce all self test errors in sequence and check expected
2618 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2619 sign or verify all in one operation.
2622 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2623 test programs and fips_test_suite. Includes functionality to parse
2624 the minimal script output of fipsalgest.pl directly.
2627 *) Add authorisation parameter to FIPS_module_mode_set().
2630 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2633 *) Use separate DRBG fields for internal and external flags. New function
2634 FIPS_drbg_health_check() to perform on demand health checking. Add
2635 generation tests to fips_test_suite with reduced health check interval to
2636 demonstrate periodic health checking. Add "nodh" option to
2637 fips_test_suite to skip very slow DH test.
2640 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2644 *) More extensive health check for DRBG checking many more failure modes.
2645 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2646 combination: call this in fips_test_suite.
2649 *) Add support for canonical generation of DSA parameter 'g'. See
2652 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2653 POST to handle HMAC cases.
2656 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2657 to return numerical and string versions of the FIPS module number.
2660 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2661 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2662 outside the validated module in the FIPS capable OpenSSL.
2665 *) Minor change to DRBG entropy callback semantics. In some cases
2666 there is no multiple of the block length between min_len and
2667 max_len. Allow the callback to return more than max_len bytes
2668 of entropy but discard any extra: it is the callback's responsibility
2669 to ensure that the extra data discarded does not impact the
2670 requested amount of entropy.
2673 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2674 information in FIPS186-3, SP800-57 and SP800-131A.
2677 *) CCM support via EVP. Interface is very similar to GCM case except we
2678 must supply all data in one chunk (i.e. no update, final) and the
2679 message length must be supplied if AAD is used. Add algorithm test
2683 *) Initial version of POST overhaul. Add POST callback to allow the status
2684 of POST to be monitored and/or failures induced. Modify fips_test_suite
2685 to use callback. Always run all selftests even if one fails.
2688 *) XTS support including algorithm test driver in the fips_gcmtest program.
2689 Note: this does increase the maximum key length from 32 to 64 bytes but
2690 there should be no binary compatibility issues as existing applications
2691 will never use XTS mode.
2694 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2695 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2696 performs algorithm blocking for unapproved PRNG types. Also do not
2697 set PRNG type in FIPS_mode_set(): leave this to the application.
2698 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2699 the standard OpenSSL PRNG: set additional data to a date time vector.
2702 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2703 This shouldn't present any incompatibility problems because applications
2704 shouldn't be using these directly and any that are will need to rethink
2705 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2708 *) Extensive self tests and health checking required by SP800-90 DRBG.
2709 Remove strength parameter from FIPS_drbg_instantiate and always
2710 instantiate at maximum supported strength.
2713 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2716 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2719 *) New function DH_compute_key_padded() to compute a DH key and pad with
2720 leading zeroes if needed: this complies with SP800-56A et al.
2723 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2724 anything, incomplete, subject to change and largely untested at present.
2727 *) Modify fipscanisteronly build option to only build the necessary object
2728 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2731 *) Add experimental option FIPSSYMS to give all symbols in
2732 fipscanister.o and FIPS or fips prefix. This will avoid
2733 conflicts with future versions of OpenSSL. Add perl script
2734 util/fipsas.pl to preprocess assembly language source files
2735 and rename any affected symbols.
2738 *) Add selftest checks and algorithm block of non-fips algorithms in
2739 FIPS mode. Remove DES2 from selftests.
2742 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2743 return internal method without any ENGINE dependencies. Add new
2744 tiny fips sign and verify functions.
2747 *) New build option no-ec2m to disable characteristic 2 code.
2750 *) New build option "fipscanisteronly". This only builds fipscanister.o
2751 and (currently) associated fips utilities. Uses the file Makefile.fips
2752 instead of Makefile.org as the prototype.
2755 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2756 Update fips_gcmtest to use IV generator.
2759 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2760 setting output buffer to NULL. The *Final function must be
2761 called although it will not retrieve any additional data. The tag
2762 can be set or retrieved with a ctrl. The IV length is by default 12
2763 bytes (96 bits) but can be set to an alternative value. If the IV
2764 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2768 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2769 underlying do_cipher function handles all cipher semantics itself
2770 including padding and finalisation. This is useful if (for example)
2771 an ENGINE cipher handles block padding itself. The behaviour of
2772 do_cipher is subtly changed if this flag is set: the return value
2773 is the number of characters written to the output buffer (zero is
2774 no longer an error code) or a negative error code. Also if the
2775 input buffer is NULL and length 0 finalisation should be performed.
2778 *) If a candidate issuer certificate is already part of the constructed
2779 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2782 *) Improve forward-security support: add functions
2784 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2785 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2787 for use by SSL/TLS servers; the callback function will be called whenever a
2788 new session is created, and gets to decide whether the session may be
2789 cached to make it resumable (return 0) or not (return 1). (As by the
2790 SSL/TLS protocol specifications, the session_id sent by the server will be
2791 empty to indicate that the session is not resumable; also, the server will
2792 not generate RFC 4507 (RFC 5077) session tickets.)
2794 A simple reasonable callback implementation is to return is_forward_secure.
2795 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2796 by the SSL/TLS server library, indicating whether it can provide forward
2798 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2800 *) New -verify_name option in command line utilities to set verification
2804 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2805 Add CMAC pkey methods.
2808 *) Experimental renegotiation in s_server -www mode. If the client
2809 browses /reneg connection is renegotiated. If /renegcert it is
2810 renegotiated requesting a certificate.
2813 *) Add an "external" session cache for debugging purposes to s_server. This
2814 should help trace issues which normally are only apparent in deployed
2815 multi-process servers.
2818 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2819 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2820 BIO_set_cipher() and some obscure PEM functions were changed so they
2821 can now return an error. The RAND changes required a change to the
2822 RAND_METHOD structure.
2825 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2826 a gcc attribute to warn if the result of a function is ignored. This
2827 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2828 whose return value is often ignored.
2831 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2832 These allow SCTs (signed certificate timestamps) to be requested and
2833 validated when establishing a connection.
2834 [Rob Percival <robpercival@google.com>]
2836 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2838 *) Prevent padding oracle in AES-NI CBC MAC check
2840 A MITM attacker can use a padding oracle attack to decrypt traffic
2841 when the connection uses an AES CBC cipher and the server support
2844 This issue was introduced as part of the fix for Lucky 13 padding
2845 attack (CVE-2013-0169). The padding check was rewritten to be in
2846 constant time by making sure that always the same bytes are read and
2847 compared against either the MAC or padding bytes. But it no longer
2848 checked that there was enough data to have both the MAC and padding
2851 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2855 *) Fix EVP_EncodeUpdate overflow
2857 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2858 Base64 encoding of binary data. If an attacker is able to supply very large
2859 amounts of input data then a length check can overflow resulting in a heap
2862 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2863 the PEM_write_bio* family of functions. These are mainly used within the
2864 OpenSSL command line applications, so any application which processes data
2865 from an untrusted source and outputs it as a PEM file should be considered
2866 vulnerable to this issue. User applications that call these APIs directly
2867 with large amounts of untrusted data may also be vulnerable.
2869 This issue was reported by Guido Vranken.
2873 *) Fix EVP_EncryptUpdate overflow
2875 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2876 is able to supply very large amounts of input data after a previous call to
2877 EVP_EncryptUpdate() with a partial block then a length check can overflow
2878 resulting in a heap corruption. Following an analysis of all OpenSSL
2879 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2880 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2881 the first called function after an EVP_EncryptInit(), and therefore that
2882 specific call must be safe. The second form is where the length passed to
2883 EVP_EncryptUpdate() can be seen from the code to be some small value and
2884 therefore there is no possibility of an overflow. Since all instances are
2885 one of these two forms, it is believed that there can be no overflows in
2886 internal code due to this problem. It should be noted that
2887 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2888 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2889 of these calls have also been analysed too and it is believed there are no
2890 instances in internal usage where an overflow could occur.
2892 This issue was reported by Guido Vranken.
2896 *) Prevent ASN.1 BIO excessive memory allocation
2898 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2899 a short invalid encoding can cause allocation of large amounts of memory
2900 potentially consuming excessive resources or exhausting memory.
2902 Any application parsing untrusted data through d2i BIO functions is
2903 affected. The memory based functions such as d2i_X509() are *not* affected.
2904 Since the memory based functions are used by the TLS library, TLS
2905 applications are not affected.
2907 This issue was reported by Brian Carpenter.
2913 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2914 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2915 in arbitrary stack data being returned in the buffer.
2917 This issue was reported by Guido Vranken.
2921 *) Modify behavior of ALPN to invoke callback after SNI/servername
2922 callback, such that updates to the SSL_CTX affect ALPN.
2925 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2929 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2930 methods are enabled and ssl2 is disabled the methods return NULL.
2933 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2935 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2936 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2937 provide any "EXPORT" or "LOW" strength ciphers.
2940 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2941 is by default disabled at build-time. Builds that are not configured with
2942 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2943 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2944 will need to explicitly call either of:
2946 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2948 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2950 as appropriate. Even if either of those is used, or the application
2951 explicitly uses the version-specific SSLv2_method() or its client and
2952 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2953 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2954 ciphers, and SSLv2 56-bit DES are no longer available.
2958 *) Fix a double-free in DSA code
2960 A double free bug was discovered when OpenSSL parses malformed DSA private
2961 keys and could lead to a DoS attack or memory corruption for applications
2962 that receive DSA private keys from untrusted sources. This scenario is
2965 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2970 *) Disable SRP fake user seed to address a server memory leak.
2972 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2974 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2975 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2976 was changed to ignore the "fake user" SRP seed, even if the seed
2979 Users should use SRP_VBASE_get1_by_user instead. Note that in
2980 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2981 also that even though configuring the SRP seed attempts to hide
2982 invalid usernames by continuing the handshake with fake
2983 credentials, this behaviour is not constant time and no strong
2984 guarantees are made that the handshake is indistinguishable from
2985 that of a valid user.
2989 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2991 In the BN_hex2bn function the number of hex digits is calculated using an
2992 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2993 large values of |i| this can result in |bn_expand| not allocating any
2994 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2995 field as NULL leading to a subsequent NULL ptr deref. For very large values
2996 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2997 In this case memory is allocated to the internal BIGNUM data field, but it
2998 is insufficiently sized leading to heap corruption. A similar issue exists
2999 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
3000 is ever called by user applications with very large untrusted hex/dec data.
3001 This is anticipated to be a rare occurrence.
3003 All OpenSSL internal usage of these functions use data that is not expected
3004 to be untrusted, e.g. config file data or application command line
3005 arguments. If user developed applications generate config file data based
3006 on untrusted data then it is possible that this could also lead to security
3007 consequences. This is also anticipated to be rare.
3009 This issue was reported to OpenSSL by Guido Vranken.
3013 *) Fix memory issues in BIO_*printf functions
3015 The internal |fmtstr| function used in processing a "%s" format string in
3016 the BIO_*printf functions could overflow while calculating the length of a
3017 string and cause an OOB read when printing very long strings.
3019 Additionally the internal |doapr_outch| function can attempt to write to an
3020 OOB memory location (at an offset from the NULL pointer) in the event of a
3021 memory allocation failure. In 1.0.2 and below this could be caused where
3022 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
3023 could be in processing a very long "%s" format string. Memory leaks can
3026 The first issue may mask the second issue dependent on compiler behaviour.
3027 These problems could enable attacks where large amounts of untrusted data
3028 is passed to the BIO_*printf functions. If applications use these functions
3029 in this way then they could be vulnerable. OpenSSL itself uses these
3030 functions when printing out human-readable dumps of ASN.1 data. Therefore
3031 applications that print this data could be vulnerable if the data is from
3032 untrusted sources. OpenSSL command line applications could also be
3033 vulnerable where they print out ASN.1 data, or if untrusted data is passed
3034 as command line arguments.
3036 Libssl is not considered directly vulnerable. Additionally certificates etc
3037 received via remote connections via libssl are also unlikely to be able to
3038 trigger these issues because of message size limits enforced within libssl.
3040 This issue was reported to OpenSSL Guido Vranken.
3044 *) Side channel attack on modular exponentiation
3046 A side-channel attack was found which makes use of cache-bank conflicts on
3047 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
3048 of RSA keys. The ability to exploit this issue is limited as it relies on
3049 an attacker who has control of code in a thread running on the same
3050 hyper-threaded core as the victim thread which is performing decryptions.
3052 This issue was reported to OpenSSL by Yuval Yarom, The University of
3053 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
3054 Nadia Heninger, University of Pennsylvania with more information at
3055 http://cachebleed.info.
3059 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
3060 if no keysize is specified with default_bits. This fixes an
3061 omission in an earlier change that changed all RSA/DSA key generation
3062 apps to use 2048 bits by default.
3065 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
3066 *) DH small subgroups
3068 Historically OpenSSL only ever generated DH parameters based on "safe"
3069 primes. More recently (in version 1.0.2) support was provided for
3070 generating X9.42 style parameter files such as those required for RFC 5114
3071 support. The primes used in such files may not be "safe". Where an
3072 application is using DH configured with parameters based on primes that are
3073 not "safe" then an attacker could use this fact to find a peer's private
3074 DH exponent. This attack requires that the attacker complete multiple
3075 handshakes in which the peer uses the same private DH exponent. For example
3076 this could be used to discover a TLS server's private DH exponent if it's
3077 reusing the private DH exponent or it's using a static DH ciphersuite.
3079 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
3080 TLS. It is not on by default. If the option is not set then the server
3081 reuses the same private DH exponent for the life of the server process and
3082 would be vulnerable to this attack. It is believed that many popular
3083 applications do set this option and would therefore not be at risk.
3085 The fix for this issue adds an additional check where a "q" parameter is
3086 available (as is the case in X9.42 based parameters). This detects the
3087 only known attack, and is the only possible defense for static DH
3088 ciphersuites. This could have some performance impact.
3090 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
3091 default and cannot be disabled. This could have some performance impact.
3093 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
3097 *) SSLv2 doesn't block disabled ciphers
3099 A malicious client can negotiate SSLv2 ciphers that have been disabled on
3100 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
3101 been disabled, provided that the SSLv2 protocol was not also disabled via
3104 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
3105 and Sebastian Schinzel.
3109 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
3111 *) BN_mod_exp may produce incorrect results on x86_64
3113 There is a carry propagating bug in the x86_64 Montgomery squaring
3114 procedure. No EC algorithms are affected. Analysis suggests that attacks
3115 against RSA and DSA as a result of this defect would be very difficult to
3116 perform and are not believed likely. Attacks against DH are considered just
3117 feasible (although very difficult) because most of the work necessary to
3118 deduce information about a private key may be performed offline. The amount
3119 of resources required for such an attack would be very significant and
3120 likely only accessible to a limited number of attackers. An attacker would
3121 additionally need online access to an unpatched system using the target
3122 private key in a scenario with persistent DH parameters and a private
3123 key that is shared between multiple clients. For example this can occur by
3124 default in OpenSSL DHE based SSL/TLS ciphersuites.
3126 This issue was reported to OpenSSL by Hanno Böck.
3130 *) Certificate verify crash with missing PSS parameter
3132 The signature verification routines will crash with a NULL pointer
3133 dereference if presented with an ASN.1 signature using the RSA PSS
3134 algorithm and absent mask generation function parameter. Since these
3135 routines are used to verify certificate signature algorithms this can be
3136 used to crash any certificate verification operation and exploited in a
3137 DoS attack. Any application which performs certificate verification is
3138 vulnerable including OpenSSL clients and servers which enable client
3141 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
3145 *) X509_ATTRIBUTE memory leak
3147 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
3148 memory. This structure is used by the PKCS#7 and CMS routines so any
3149 application which reads PKCS#7 or CMS data from untrusted sources is
3150 affected. SSL/TLS is not affected.
3152 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
3157 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
3158 This changes the decoding behaviour for some invalid messages,
3159 though the change is mostly in the more lenient direction, and
3160 legacy behaviour is preserved as much as possible.
3163 *) In DSA_generate_parameters_ex, if the provided seed is too short,
3165 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
3167 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
3169 *) Alternate chains certificate forgery
3171 During certificate verification, OpenSSL will attempt to find an
3172 alternative certificate chain if the first attempt to build such a chain
3173 fails. An error in the implementation of this logic can mean that an
3174 attacker could cause certain checks on untrusted certificates to be
3175 bypassed, such as the CA flag, enabling them to use a valid leaf
3176 certificate to act as a CA and "issue" an invalid certificate.
3178 This issue was reported to OpenSSL by Adam Langley/David Benjamin
3182 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
3184 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
3185 incompatibility in the handling of HMAC. The previous ABI has now been
3189 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
3191 *) Malformed ECParameters causes infinite loop
3193 When processing an ECParameters structure OpenSSL enters an infinite loop
3194 if the curve specified is over a specially malformed binary polynomial
3197 This can be used to perform denial of service against any
3198 system which processes public keys, certificate requests or
3199 certificates. This includes TLS clients and TLS servers with
3200 client authentication enabled.
3202 This issue was reported to OpenSSL by Joseph Barr-Pixton.
3206 *) Exploitable out-of-bounds read in X509_cmp_time
3208 X509_cmp_time does not properly check the length of the ASN1_TIME
3209 string and can read a few bytes out of bounds. In addition,
3210 X509_cmp_time accepts an arbitrary number of fractional seconds in the
3213 An attacker can use this to craft malformed certificates and CRLs of
3214 various sizes and potentially cause a segmentation fault, resulting in
3215 a DoS on applications that verify certificates or CRLs. TLS clients
3216 that verify CRLs are affected. TLS clients and servers with client
3217 authentication enabled may be affected if they use custom verification
3220 This issue was reported to OpenSSL by Robert Swiecki (Google), and
3221 independently by Hanno Böck.
3225 *) PKCS7 crash with missing EnvelopedContent
3227 The PKCS#7 parsing code does not handle missing inner EncryptedContent
3228 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
3229 with missing content and trigger a NULL pointer dereference on parsing.
3231 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
3232 structures from untrusted sources are affected. OpenSSL clients and
3233 servers are not affected.
3235 This issue was reported to OpenSSL by Michal Zalewski (Google).
3239 *) CMS verify infinite loop with unknown hash function
3241 When verifying a signedData message the CMS code can enter an infinite loop
3242 if presented with an unknown hash function OID. This can be used to perform
3243 denial of service against any system which verifies signedData messages using
3245 This issue was reported to OpenSSL by Johannes Bauer.
3249 *) Race condition handling NewSessionTicket
3251 If a NewSessionTicket is received by a multi-threaded client when attempting to
3252 reuse a previous ticket then a race condition can occur potentially leading to
3253 a double free of the ticket data.
3257 *) Only support 256-bit or stronger elliptic curves with the
3258 'ecdh_auto' setting (server) or by default (client). Of supported
3259 curves, prefer P-256 (both).
3262 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
3264 *) ClientHello sigalgs DoS fix
3266 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
3267 invalid signature algorithms extension a NULL pointer dereference will
3268 occur. This can be exploited in a DoS attack against the server.
3270 This issue was was reported to OpenSSL by David Ramos of Stanford
3273 [Stephen Henson and Matt Caswell]
3275 *) Multiblock corrupted pointer fix
3277 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
3278 feature only applies on 64 bit x86 architecture platforms that support AES
3279 NI instructions. A defect in the implementation of "multiblock" can cause
3280 OpenSSL's internal write buffer to become incorrectly set to NULL when
3281 using non-blocking IO. Typically, when the user application is using a
3282 socket BIO for writing, this will only result in a failed connection.
3283 However if some other BIO is used then it is likely that a segmentation
3284 fault will be triggered, thus enabling a potential DoS attack.
3286 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
3290 *) Segmentation fault in DTLSv1_listen fix
3292 The DTLSv1_listen function is intended to be stateless and processes the
3293 initial ClientHello from many peers. It is common for user code to loop
3294 over the call to DTLSv1_listen until a valid ClientHello is received with
3295 an associated cookie. A defect in the implementation of DTLSv1_listen means
3296 that state is preserved in the SSL object from one invocation to the next
3297 that can lead to a segmentation fault. Errors processing the initial
3298 ClientHello can trigger this scenario. An example of such an error could be
3299 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
3302 This issue was reported to OpenSSL by Per Allansson.
3306 *) Segmentation fault in ASN1_TYPE_cmp fix
3308 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
3309 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
3310 certificate signature algorithm consistency this can be used to crash any
3311 certificate verification operation and exploited in a DoS attack. Any
3312 application which performs certificate verification is vulnerable including
3313 OpenSSL clients and servers which enable client authentication.
3317 *) Segmentation fault for invalid PSS parameters fix
3319 The signature verification routines will crash with a NULL pointer
3320 dereference if presented with an ASN.1 signature using the RSA PSS
3321 algorithm and invalid parameters. Since these routines are used to verify
3322 certificate signature algorithms this can be used to crash any
3323 certificate verification operation and exploited in a DoS attack. Any
3324 application which performs certificate verification is vulnerable including
3325 OpenSSL clients and servers which enable client authentication.
3327 This issue was was reported to OpenSSL by Brian Carpenter.
3331 *) ASN.1 structure reuse memory corruption fix
3333 Reusing a structure in ASN.1 parsing may allow an attacker to cause
3334 memory corruption via an invalid write. Such reuse is and has been
3335 strongly discouraged and is believed to be rare.
3337 Applications that parse structures containing CHOICE or ANY DEFINED BY
3338 components may be affected. Certificate parsing (d2i_X509 and related
3339 functions) are however not affected. OpenSSL clients and servers are
3344 *) PKCS7 NULL pointer dereferences fix
3346 The PKCS#7 parsing code does not handle missing outer ContentInfo
3347 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
3348 missing content and trigger a NULL pointer dereference on parsing.
3350 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
3351 otherwise parse PKCS#7 structures from untrusted sources are
3352 affected. OpenSSL clients and servers are not affected.
3354 This issue was reported to OpenSSL by Michal Zalewski (Google).
3358 *) DoS via reachable assert in SSLv2 servers fix
3360 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
3361 servers that both support SSLv2 and enable export cipher suites by sending
3362 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
3364 This issue was discovered by Sean Burford (Google) and Emilia Käsper
3365 (OpenSSL development team).
3369 *) Empty CKE with client auth and DHE fix
3371 If client auth is used then a server can seg fault in the event of a DHE
3372 ciphersuite being selected and a zero length ClientKeyExchange message
3373 being sent by the client. This could be exploited in a DoS attack.
3377 *) Handshake with unseeded PRNG fix
3379 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
3380 with an unseeded PRNG. The conditions are:
3381 - The client is on a platform where the PRNG has not been seeded
3382 automatically, and the user has not seeded manually
3383 - A protocol specific client method version has been used (i.e. not
3384 SSL_client_methodv23)
3385 - A ciphersuite is used that does not require additional random data from
3386 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
3388 If the handshake succeeds then the client random that has been used will
3389 have been generated from a PRNG with insufficient entropy and therefore the
3390 output may be predictable.
3392 For example using the following command with an unseeded openssl will
3393 succeed on an unpatched platform:
3395 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
3399 *) Use After Free following d2i_ECPrivatekey error fix
3401 A malformed EC private key file consumed via the d2i_ECPrivateKey function
3402 could cause a use after free condition. This, in turn, could cause a double
3403 free in several private key parsing functions (such as d2i_PrivateKey
3404 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
3405 for applications that receive EC private keys from untrusted
3406 sources. This scenario is considered rare.
3408 This issue was discovered by the BoringSSL project and fixed in their
3413 *) X509_to_X509_REQ NULL pointer deref fix
3415 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
3416 the certificate key is invalid. This function is rarely used in practice.
3418 This issue was discovered by Brian Carpenter.
3422 *) Removed the export ciphers from the DEFAULT ciphers
3425 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
3427 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
3428 ARMv5 through ARMv8, as opposite to "locking" it to single one.
3429 So far those who have to target multiple platforms would compromise
3430 and argue that binary targeting say ARMv5 would still execute on
3431 ARMv8. "Universal" build resolves this compromise by providing
3432 near-optimal performance even on newer platforms.
3435 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
3436 (other platforms pending).
3437 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
3439 *) Add support for the SignedCertificateTimestampList certificate and
3440 OCSP response extensions from RFC6962.
3443 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3444 for corner cases. (Certain input points at infinity could lead to
3445 bogus results, with non-infinity inputs mapped to infinity too.)
3448 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
3449 This covers AES, SHA256/512 and GHASH. "Initial" means that most
3450 common cases are optimized and there still is room for further
3451 improvements. Vector Permutation AES for Altivec is also added.
3454 *) Add support for little-endian ppc64 Linux target.
3455 [Marcelo Cerri (IBM)]
3457 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
3458 SHA1, SHA256 and GHASH. "Initial" means that most common cases
3459 are optimized and there still is room for further improvements.
3460 Both 32- and 64-bit modes are supported.
3461 [Andy Polyakov, Ard Biesheuvel (Linaro)]
3463 *) Improved ARMv7 NEON support.
3466 *) Support for SPARC Architecture 2011 crypto extensions, first
3467 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
3468 SHA256/512, MD5, GHASH and modular exponentiation.
3469 [Andy Polyakov, David Miller]
3471 *) Accelerated modular exponentiation for Intel processors, a.k.a.
3473 [Shay Gueron & Vlad Krasnov (Intel Corp)]
3475 *) Support for new and upcoming Intel processors, including AVX2,
3476 BMI and SHA ISA extensions. This includes additional "stitched"
3477 implementations, AESNI-SHA256 and GCM, and multi-buffer support
3480 This work was sponsored by Intel Corp.
3483 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
3484 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3485 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3488 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3489 this fixes a limitation in previous versions of OpenSSL.
3492 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3493 MGF1 digest and OAEP label.
3496 *) Add EVP support for key wrapping algorithms, to avoid problems with
3497 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3498 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3499 algorithms and include tests cases.
3502 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3504 [Douglas E. Engert, Steve Henson]
3506 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3507 difference in days and seconds between two tm or ASN1_TIME structures.
3510 *) Add -rev test option to s_server to just reverse order of characters
3511 received by client and send back to server. Also prints an abbreviated
3512 summary of the connection parameters.
3515 *) New option -brief for s_client and s_server to print out a brief summary
3516 of connection parameters.
3519 *) Add callbacks for arbitrary TLS extensions.
3520 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3522 *) New option -crl_download in several openssl utilities to download CRLs
3523 from CRLDP extension in certificates.
3526 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3529 *) New function X509_CRL_diff to generate a delta CRL from the difference
3530 of two full CRLs. Add support to "crl" utility.
3533 *) New functions to set lookup_crls function and to retrieve
3534 X509_STORE from X509_STORE_CTX.
3537 *) Print out deprecated issuer and subject unique ID fields in
3541 *) Extend OCSP I/O functions so they can be used for simple general purpose
3542 HTTP as well as OCSP. New wrapper function which can be used to download
3543 CRLs using the OCSP API.
3546 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3549 *) SSL_CONF* functions. These provide a common framework for application
3550 configuration using configuration files or command lines.
3553 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3554 message callback and prints the results. Needs compile time option
3555 "enable-ssl-trace". New options to s_client and s_server to enable
3559 *) New ctrl and macro to retrieve supported points extensions.
3560 Print out extension in s_server and s_client.
3563 *) New functions to retrieve certificate signature and signature
3567 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3571 *) New Suite B modes for TLS code. These use and enforce the requirements
3572 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3573 only use Suite B curves. The Suite B modes can be set by using the
3574 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3577 *) New chain verification flags for Suite B levels of security. Check
3578 algorithms are acceptable when flags are set in X509_verify_cert.
3581 *) Make tls1_check_chain return a set of flags indicating checks passed
3582 by a certificate chain. Add additional tests to handle client
3583 certificates: checks for matching certificate type and issuer name
3587 *) If an attempt is made to use a signature algorithm not in the peer
3588 preference list abort the handshake. If client has no suitable
3589 signature algorithms in response to a certificate request do not
3590 use the certificate.
3593 *) If server EC tmp key is not in client preference list abort handshake.
3596 *) Add support for certificate stores in CERT structure. This makes it
3597 possible to have different stores per SSL structure or one store in
3598 the parent SSL_CTX. Include distinct stores for certificate chain
3599 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3600 to build and store a certificate chain in CERT structure: returning
3601 an error if the chain cannot be built: this will allow applications
3602 to test if a chain is correctly configured.
3604 Note: if the CERT based stores are not set then the parent SSL_CTX
3605 store is used to retain compatibility with existing behaviour.
3609 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3610 mask based on the current session, check mask when sending client
3611 hello and checking the requested ciphersuite.
3614 *) New ctrls to retrieve and set certificate types in a certificate
3615 request message. Print out received values in s_client. If certificate
3616 types is not set with custom values set sensible values based on
3617 supported signature algorithms.
3620 *) Support for distinct client and server supported signature algorithms.
3623 *) Add certificate callback. If set this is called whenever a certificate
3624 is required by client or server. An application can decide which
3625 certificate chain to present based on arbitrary criteria: for example
3626 supported signature algorithms. Add very simple example to s_server.
3627 This fixes many of the problems and restrictions of the existing client
3628 certificate callback: for example you can now clear an existing
3629 certificate and specify the whole chain.
3632 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3633 the certificate can be used for (if anything). Set valid_flags field
3634 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3635 to have similar checks in it.
3637 Add new "cert_flags" field to CERT structure and include a "strict mode".
3638 This enforces some TLS certificate requirements (such as only permitting
3639 certificate signature algorithms contained in the supported algorithms
3640 extension) which some implementations ignore: this option should be used
3641 with caution as it could cause interoperability issues.
3644 *) Update and tidy signature algorithm extension processing. Work out
3645 shared signature algorithms based on preferences and peer algorithms
3646 and print them out in s_client and s_server. Abort handshake if no
3647 shared signature algorithms.
3650 *) Add new functions to allow customised supported signature algorithms
3651 for SSL and SSL_CTX structures. Add options to s_client and s_server
3655 *) New function SSL_certs_clear() to delete all references to certificates
3656 from an SSL structure. Before this once a certificate had been added
3657 it couldn't be removed.
3660 *) Integrate hostname, email address and IP address checking with certificate
3661 verification. New verify options supporting checking in openssl utility.
3664 *) Fixes and wildcard matching support to hostname and email checking
3665 functions. Add manual page.
3666 [Florian Weimer (Red Hat Product Security Team)]
3668 *) New functions to check a hostname email or IP address against a
3669 certificate. Add options x509 utility to print results of checks against
3673 *) Fix OCSP checking.
3674 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3676 *) Initial experimental support for explicitly trusted non-root CAs.
3677 OpenSSL still tries to build a complete chain to a root but if an
3678 intermediate CA has a trust setting included that is used. The first
3679 setting is used: whether to trust (e.g., -addtrust option to the x509
3683 *) Add -trusted_first option which attempts to find certificates in the
3684 trusted store even if an untrusted chain is also supplied.
3687 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3688 platform support for Linux and Android.
3691 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3694 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3695 When in FIPS mode the approved implementations are used as normal,
3696 when not in FIPS mode the internal unapproved versions are used instead.
3697 This means that the FIPS capable OpenSSL isn't forced to use the
3698 (often lower performance) FIPS implementations outside FIPS mode.
3701 *) Transparently support X9.42 DH parameters when calling
3702 PEM_read_bio_DHparameters. This means existing applications can handle
3703 the new parameter format automatically.
3706 *) Initial experimental support for X9.42 DH parameter format: mainly
3707 to support use of 'q' parameter for RFC5114 parameters.
3710 *) Add DH parameters from RFC5114 including test data to dhtest.
3713 *) Support for automatic EC temporary key parameter selection. If enabled
3714 the most preferred EC parameters are automatically used instead of
3715 hardcoded fixed parameters. Now a server just has to call:
3716 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3717 support ECDH and use the most appropriate parameters.
3720 *) Enhance and tidy EC curve and point format TLS extension code. Use
3721 static structures instead of allocation if default values are used.
3722 New ctrls to set curves we wish to support and to retrieve shared curves.
3723 Print out shared curves in s_server. New options to s_server and s_client
3724 to set list of supported curves.
3727 *) New ctrls to retrieve supported signature algorithms and
3728 supported curve values as an array of NIDs. Extend openssl utility
3729 to print out received values.
3732 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3733 between NIDs and the more common NIST names such as "P-256". Enhance
3734 ecparam utility and ECC method to recognise the NIST names for curves.
3737 *) Enhance SSL/TLS certificate chain handling to support different
3738 chains for each certificate instead of one chain in the parent SSL_CTX.
3741 *) Support for fixed DH ciphersuite client authentication: where both
3742 server and client use DH certificates with common parameters.
3745 *) Support for fixed DH ciphersuites: those requiring DH server
3749 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3751 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3752 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3753 X509_CINF_get_signature were reverted post internal team review.
3755 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3757 *) Build fixes for the Windows and OpenVMS platforms
3758 [Matt Caswell and Richard Levitte]
3760 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3762 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3763 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3764 dereference. This could lead to a Denial Of Service attack. Thanks to
3765 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3769 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3770 dtls1_buffer_record function under certain conditions. In particular this
3771 could occur if an attacker sent repeated DTLS records with the same
3772 sequence number but for the next epoch. The memory leak could be exploited
3773 by an attacker in a Denial of Service attack through memory exhaustion.
3774 Thanks to Chris Mueller for reporting this issue.
3778 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3779 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3780 method would be set to NULL which could later result in a NULL pointer
3781 dereference. Thanks to Frank Schmirler for reporting this issue.
3785 *) Abort handshake if server key exchange message is omitted for ephemeral
3788 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3789 reporting this issue.
3793 *) Remove non-export ephemeral RSA code on client and server. This code
3794 violated the TLS standard by allowing the use of temporary RSA keys in
3795 non-export ciphersuites and could be used by a server to effectively
3796 downgrade the RSA key length used to a value smaller than the server
3797 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3798 INRIA or reporting this issue.
3802 *) Fixed issue where DH client certificates are accepted without verification.
3803 An OpenSSL server will accept a DH certificate for client authentication
3804 without the certificate verify message. This effectively allows a client to
3805 authenticate without the use of a private key. This only affects servers
3806 which trust a client certificate authority which issues certificates
3807 containing DH keys: these are extremely rare and hardly ever encountered.
3808 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3813 *) Ensure that the session ID context of an SSL is updated when its
3814 SSL_CTX is updated via SSL_set_SSL_CTX.
3816 The session ID context is typically set from the parent SSL_CTX,
3817 and can vary with the CTX.
3820 *) Fix various certificate fingerprint issues.
3822 By using non-DER or invalid encodings outside the signed portion of a
3823 certificate the fingerprint can be changed without breaking the signature.
3824 Although no details of the signed portion of the certificate can be changed
3825 this can cause problems with some applications: e.g. those using the
3826 certificate fingerprint for blacklists.
3828 1. Reject signatures with non zero unused bits.
3830 If the BIT STRING containing the signature has non zero unused bits reject
3831 the signature. All current signature algorithms require zero unused bits.
3833 2. Check certificate algorithm consistency.
3835 Check the AlgorithmIdentifier inside TBS matches the one in the
3836 certificate signature. NB: this will result in signature failure
3837 errors for some broken certificates.
3839 Thanks to Konrad Kraszewski from Google for reporting this issue.
3841 3. Check DSA/ECDSA signatures use DER.
3843 Re-encode DSA/ECDSA signatures and compare with the original received
3844 signature. Return an error if there is a mismatch.
3846 This will reject various cases including garbage after signature
3847 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3848 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3849 (negative or with leading zeroes).
3851 Further analysis was conducted and fixes were developed by Stephen Henson
3852 of the OpenSSL core team.
3857 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3858 results on some platforms, including x86_64. This bug occurs at random
3859 with a very low probability, and is not known to be exploitable in any
3860 way, though its exact impact is difficult to determine. Thanks to Pieter
3861 Wuille (Blockstream) who reported this issue and also suggested an initial
3862 fix. Further analysis was conducted by the OpenSSL development team and
3863 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3864 the OpenSSL core team.
3868 *) Do not resume sessions on the server if the negotiated protocol
3869 version does not match the session's version. Resuming with a different
3870 version, while not strictly forbidden by the RFC, is of questionable
3871 sanity and breaks all known clients.
3872 [David Benjamin, Emilia Käsper]
3874 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3875 early CCS messages during renegotiation. (Note that because
3876 renegotiation is encrypted, this early CCS was not exploitable.)
3879 *) Tighten client-side session ticket handling during renegotiation:
3880 ensure that the client only accepts a session ticket if the server sends
3881 the extension anew in the ServerHello. Previously, a TLS client would
3882 reuse the old extension state and thus accept a session ticket if one was
3883 announced in the initial ServerHello.
3885 Similarly, ensure that the client requires a session ticket if one
3886 was advertised in the ServerHello. Previously, a TLS client would
3887 ignore a missing NewSessionTicket message.
3890 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3892 *) SRTP Memory Leak.
3894 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3895 sends a carefully crafted handshake message, to cause OpenSSL to fail
3896 to free up to 64k of memory causing a memory leak. This could be
3897 exploited in a Denial Of Service attack. This issue affects OpenSSL
3898 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3899 whether SRTP is used or configured. Implementations of OpenSSL that
3900 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3902 The fix was developed by the OpenSSL team.
3906 *) Session Ticket Memory Leak.
3908 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3909 integrity of that ticket is first verified. In the event of a session
3910 ticket integrity check failing, OpenSSL will fail to free memory
3911 causing a memory leak. By sending a large number of invalid session
3912 tickets an attacker could exploit this issue in a Denial Of Service
3917 *) Build option no-ssl3 is incomplete.
3919 When OpenSSL is configured with "no-ssl3" as a build option, servers
3920 could accept and complete a SSL 3.0 handshake, and clients could be
3921 configured to send them.
3923 [Akamai and the OpenSSL team]
3925 *) Add support for TLS_FALLBACK_SCSV.
3926 Client applications doing fallback retries should call
3927 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3929 [Adam Langley, Bodo Moeller]
3931 *) Add additional DigestInfo checks.
3933 Re-encode DigestInto in DER and check against the original when
3934 verifying RSA signature: this will reject any improperly encoded
3935 DigestInfo structures.
3937 Note: this is a precautionary measure and no attacks are currently known.
3941 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3943 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3944 SRP code can be overrun an internal buffer. Add sanity check that
3945 g, A, B < N to SRP code.
3947 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3948 Group for discovering this issue.
3952 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3953 TLS 1.0 instead of higher protocol versions when the ClientHello message
3954 is badly fragmented. This allows a man-in-the-middle attacker to force a
3955 downgrade to TLS 1.0 even if both the server and the client support a
3956 higher protocol version, by modifying the client's TLS records.
3958 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3959 researching this issue.
3963 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3964 to a denial of service attack. A malicious server can crash the client
3965 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3966 ciphersuite and sending carefully crafted handshake messages.
3968 Thanks to Felix Gröbert (Google) for discovering and researching this
3973 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3974 to leak memory. This can be exploited through a Denial of Service attack.
3975 Thanks to Adam Langley for discovering and researching this issue.
3979 *) An attacker can force openssl to consume large amounts of memory whilst
3980 processing DTLS handshake messages. This can be exploited through a
3981 Denial of Service attack.
3982 Thanks to Adam Langley for discovering and researching this issue.
3986 *) An attacker can force an error condition which causes openssl to crash
3987 whilst processing DTLS packets due to memory being freed twice. This
3988 can be exploited through a Denial of Service attack.
3989 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3994 *) If a multithreaded client connects to a malicious server using a resumed
3995 session and the server sends an ec point format extension it could write
3996 up to 255 bytes to freed memory.
3998 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
4003 *) A malicious server can crash an OpenSSL client with a null pointer
4004 dereference (read) by specifying an SRP ciphersuite even though it was not
4005 properly negotiated with the client. This can be exploited through a
4006 Denial of Service attack.
4008 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
4009 discovering and researching this issue.
4013 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
4014 X509_name_oneline, X509_name_print_ex et al. to leak some information
4015 from the stack. Applications may be affected if they echo pretty printing
4016 output to the attacker.
4018 Thanks to Ivan Fratric (Google) for discovering this issue.
4020 [Emilia Käsper, and Steve Henson]
4022 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
4023 for corner cases. (Certain input points at infinity could lead to
4024 bogus results, with non-infinity inputs mapped to infinity too.)
4027 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
4029 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
4030 handshake can force the use of weak keying material in OpenSSL
4031 SSL/TLS clients and servers.
4033 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
4034 researching this issue. (CVE-2014-0224)
4035 [KIKUCHI Masashi, Steve Henson]
4037 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
4038 OpenSSL DTLS client the code can be made to recurse eventually crashing
4041 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
4043 [Imre Rad, Steve Henson]
4045 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
4046 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
4047 client or server. This is potentially exploitable to run arbitrary
4048 code on a vulnerable client or server.
4050 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
4051 [Jüri Aedla, Steve Henson]
4053 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
4054 are subject to a denial of service attack.
4056 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
4057 this issue. (CVE-2014-3470)
4058 [Felix Gröbert, Ivan Fratric, Steve Henson]
4060 *) Harmonize version and its documentation. -f flag is used to display
4062 [mancha <mancha1@zoho.com>]
4064 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
4065 in i2d_ECPrivateKey.
4066 [mancha <mancha1@zoho.com>]
4068 *) Fix some double frees. These are not thought to be exploitable.
4069 [mancha <mancha1@zoho.com>]
4071 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
4073 *) A missing bounds check in the handling of the TLS heartbeat extension
4074 can be used to reveal up to 64k of memory to a connected client or
4077 Thanks for Neel Mehta of Google Security for discovering this bug and to
4078 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
4079 preparing the fix (CVE-2014-0160)
4080 [Adam Langley, Bodo Moeller]
4082 *) Fix for the attack described in the paper "Recovering OpenSSL
4083 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
4084 by Yuval Yarom and Naomi Benger. Details can be obtained from:
4085 http://eprint.iacr.org/2014/140
4087 Thanks to Yuval Yarom and Naomi Benger for discovering this
4088 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
4089 [Yuval Yarom and Naomi Benger]
4091 *) TLS pad extension: draft-agl-tls-padding-03
4093 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
4094 TLS client Hello record length value would otherwise be > 255 and
4095 less that 512 pad with a dummy extension containing zeroes so it
4096 is at least 512 bytes long.
4098 [Adam Langley, Steve Henson]
4100 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
4102 *) Fix for TLS record tampering bug. A carefully crafted invalid
4103 handshake could crash OpenSSL with a NULL pointer exception.
4104 Thanks to Anton Johansson for reporting this issues.
4107 *) Keep original DTLS digest and encryption contexts in retransmission
4108 structures so we can use the previous session parameters if they need
4109 to be resent. (CVE-2013-6450)
4112 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
4113 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
4114 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
4115 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
4116 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
4117 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
4118 [Rob Stradling, Adam Langley]
4120 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
4122 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
4123 supporting platforms or when small records were transferred.
4124 [Andy Polyakov, Steve Henson]
4126 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
4128 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
4130 This addresses the flaw in CBC record processing discovered by
4131 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
4132 at: http://www.isg.rhul.ac.uk/tls/
4134 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4135 Security Group at Royal Holloway, University of London
4136 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
4137 Emilia Käsper for the initial patch.
4139 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
4141 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
4142 ciphersuites which can be exploited in a denial of service attack.
4143 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
4144 and detecting this bug and to Wolfgang Ettlinger
4145 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
4149 *) Return an error when checking OCSP signatures when key is NULL.
4150 This fixes a DoS attack. (CVE-2013-0166)
4153 *) Make openssl verify return errors.
4154 [Chris Palmer <palmer@google.com> and Ben Laurie]
4156 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
4157 the right response is stapled. Also change SSL_get_certificate()
4158 so it returns the certificate actually sent.
4159 See http://rt.openssl.org/Ticket/Display.html?id=2836.
4160 [Rob Stradling <rob.stradling@comodo.com>]
4162 *) Fix possible deadlock when decoding public keys.
4165 *) Don't use TLS 1.0 record version number in initial client hello
4169 Changes between 1.0.1b and 1.0.1c [10 May 2012]
4171 *) Sanity check record length before skipping explicit IV in TLS
4172 1.2, 1.1 and DTLS to fix DoS attack.
4174 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
4175 fuzzing as a service testing platform.
4179 *) Initialise tkeylen properly when encrypting CMS messages.
4180 Thanks to Solar Designer of Openwall for reporting this issue.
4183 *) In FIPS mode don't try to use composite ciphers as they are not
4187 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
4189 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
4190 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
4191 mean any application compiled against OpenSSL 1.0.0 headers setting
4192 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
4193 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
4194 0x10000000L Any application which was previously compiled against
4195 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
4196 will need to be recompiled as a result. Letting be results in
4197 inability to disable specifically TLS 1.1 and in client context,
4198 in unlike event, limit maximum offered version to TLS 1.0 [see below].
4201 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
4202 disable just protocol X, but all protocols above X *if* there are
4203 protocols *below* X still enabled. In more practical terms it means
4204 that if application wants to disable TLS1.0 in favor of TLS1.1 and
4205 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
4206 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
4210 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
4212 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
4213 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
4214 in CRYPTO_realloc_clean.
4216 Thanks to Tavis Ormandy, Google Security Team, for discovering this
4217 issue and to Adam Langley <agl@chromium.org> for fixing it.
4219 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
4221 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
4224 *) Workarounds for some broken servers that "hang" if a client hello
4225 record length exceeds 255 bytes.
4227 1. Do not use record version number > TLS 1.0 in initial client
4228 hello: some (but not all) hanging servers will now work.
4229 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
4230 the number of ciphers sent in the client hello. This should be
4231 set to an even number, such as 50, for example by passing:
4232 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
4233 Most broken servers should now work.
4234 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
4235 TLS 1.2 client support entirely.
4238 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
4241 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
4243 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
4244 STRING form instead of a DigestInfo.
4247 *) The format used for MDC2 RSA signatures is inconsistent between EVP
4248 and the RSA_sign/RSA_verify functions. This was made more apparent when
4249 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
4250 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
4251 the correct format in RSA_verify so both forms transparently work.
4254 *) Some servers which support TLS 1.0 can choke if we initially indicate
4255 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
4256 encrypted premaster secret. As a workaround use the maximum permitted
4257 client version in client hello, this should keep such servers happy
4258 and still work with previous versions of OpenSSL.
4261 *) Add support for TLS/DTLS heartbeats.
4262 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4264 *) Add support for SCTP.
4265 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4267 *) Improved PRNG seeding for VOS.
4268 [Paul Green <Paul.Green@stratus.com>]
4270 *) Extensive assembler packs updates, most notably:
4272 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
4273 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
4274 - x86_64: bit-sliced AES implementation;
4275 - ARM: NEON support, contemporary platforms optimizations;
4276 - s390x: z196 support;
4277 - *: GHASH and GF(2^m) multiplication implementations;
4281 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
4282 (removal of unnecessary code)
4283 [Peter Sylvester <peter.sylvester@edelweb.fr>]
4285 *) Add TLS key material exporter from RFC 5705.
4288 *) Add DTLS-SRTP negotiation from RFC 5764.
4291 *) Add Next Protocol Negotiation,
4292 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
4293 disabled with a no-npn flag to config or Configure. Code donated
4295 [Adam Langley <agl@google.com> and Ben Laurie]
4297 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
4298 NIST-P256, NIST-P521, with constant-time single point multiplication on
4299 typical inputs. Compiler support for the nonstandard type __uint128_t is
4300 required to use this (present in gcc 4.4 and later, for 64-bit builds).
4301 Code made available under Apache License version 2.0.
4303 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
4304 line to include this in your build of OpenSSL, and run "make depend" (or
4305 "make update"). This enables the following EC_METHODs:
4307 EC_GFp_nistp224_method()
4308 EC_GFp_nistp256_method()
4309 EC_GFp_nistp521_method()
4311 EC_GROUP_new_by_curve_name() will automatically use these (while
4312 EC_GROUP_new_curve_GFp() currently prefers the more flexible
4314 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
4316 *) Use type ossl_ssize_t instead of ssize_t which isn't available on
4317 all platforms. Move ssize_t definition from e_os.h to the public
4318 header file e_os2.h as it now appears in public header file cms.h
4321 *) New -sigopt option to the ca, req and x509 utilities. Additional
4322 signature parameters can be passed using this option and in
4326 *) Add RSA PSS signing function. This will generate and set the
4327 appropriate AlgorithmIdentifiers for PSS based on those in the
4328 corresponding EVP_MD_CTX structure. No application support yet.
4331 *) Support for companion algorithm specific ASN1 signing routines.
4332 New function ASN1_item_sign_ctx() signs a pre-initialised
4333 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
4334 the appropriate parameters.
4337 *) Add new algorithm specific ASN1 verification initialisation function
4338 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
4339 handling will be the same no matter what EVP_PKEY_METHOD is used.
4340 Add a PSS handler to support verification of PSS signatures: checked
4341 against a number of sample certificates.
4344 *) Add signature printing for PSS. Add PSS OIDs.
4345 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
4347 *) Add algorithm specific signature printing. An individual ASN1 method
4348 can now print out signatures instead of the standard hex dump.
4350 More complex signatures (e.g. PSS) can print out more meaningful
4351 information. Include DSA version that prints out the signature
4355 *) Password based recipient info support for CMS library: implementing
4359 *) Split password based encryption into PBES2 and PBKDF2 functions. This
4360 neatly separates the code into cipher and PBE sections and is required
4361 for some algorithms that split PBES2 into separate pieces (such as
4362 password based CMS).
4365 *) Session-handling fixes:
4366 - Fix handling of connections that are resuming with a session ID,
4367 but also support Session Tickets.
4368 - Fix a bug that suppressed issuing of a new ticket if the client
4369 presented a ticket with an expired session.
4370 - Try to set the ticket lifetime hint to something reasonable.
4371 - Make tickets shorter by excluding irrelevant information.
4372 - On the client side, don't ignore renewed tickets.
4373 [Adam Langley, Bodo Moeller (Google)]
4375 *) Fix PSK session representation.
4378 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
4380 This work was sponsored by Intel.
4383 *) Add GCM support to TLS library. Some custom code is needed to split
4384 the IV between the fixed (from PRF) and explicit (from TLS record)
4385 portions. This adds all GCM ciphersuites supported by RFC5288 and
4386 RFC5289. Generalise some AES* cipherstrings to include GCM and
4387 add a special AESGCM string for GCM only.
4390 *) Expand range of ctrls for AES GCM. Permit setting invocation
4391 field on decrypt and retrieval of invocation field only on encrypt.
4394 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
4395 As required by RFC5289 these ciphersuites cannot be used if for
4396 versions of TLS earlier than 1.2.
4399 *) For FIPS capable OpenSSL interpret a NULL default public key method
4400 as unset and return the appropriate default but do *not* set the default.
4401 This means we can return the appropriate method in applications that
4402 switch between FIPS and non-FIPS modes.
4405 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
4406 ENGINE is used then we cannot handle that in the FIPS module so we
4407 keep original code iff non-FIPS operations are allowed.
4410 *) Add -attime option to openssl utilities.
4411 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
4413 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
4416 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
4417 FIPS EC methods unconditionally for now.
4420 *) New build option no-ec2m to disable characteristic 2 code.
4423 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
4424 all cases can be covered as some introduce binary incompatibilities.
4427 *) Redirect RSA operations to FIPS module including keygen,
4428 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
4431 *) Add similar low level API blocking to ciphers.
4434 *) Low level digest APIs are not approved in FIPS mode: any attempt
4435 to use these will cause a fatal error. Applications that *really* want
4436 to use them can use the private_* version instead.
4439 *) Redirect cipher operations to FIPS module for FIPS builds.
4442 *) Redirect digest operations to FIPS module for FIPS builds.
4445 *) Update build system to add "fips" flag which will link in fipscanister.o
4446 for static and shared library builds embedding a signature if needed.
4449 *) Output TLS supported curves in preference order instead of numerical
4450 order. This is currently hardcoded for the highest order curves first.
4451 This should be configurable so applications can judge speed vs strength.
4454 *) Add TLS v1.2 server support for client authentication.
4457 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
4461 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
4462 FIPS modules versions.
4465 *) Add TLS v1.2 client side support for client authentication. Keep cache
4466 of handshake records longer as we don't know the hash algorithm to use
4467 until after the certificate request message is received.
4470 *) Initial TLS v1.2 client support. Add a default signature algorithms
4471 extension including all the algorithms we support. Parse new signature
4472 format in client key exchange. Relax some ECC signing restrictions for
4473 TLS v1.2 as indicated in RFC5246.
4476 *) Add server support for TLS v1.2 signature algorithms extension. Switch
4477 to new signature format when needed using client digest preference.
4478 All server ciphersuites should now work correctly in TLS v1.2. No client
4479 support yet and no support for client certificates.
4482 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
4483 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
4484 ciphersuites. At present only RSA key exchange ciphersuites work with
4485 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4486 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4487 and version checking.
4490 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4491 with this defined it will not be affected by any changes to ssl internal
4492 structures. Add several utility functions to allow openssl application
4493 to work with OPENSSL_NO_SSL_INTERN defined.
4496 *) A long standing patch to add support for SRP from EdelWeb (Peter
4497 Sylvester and Christophe Renou) was integrated.
4498 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4499 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4502 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4505 *) Permit abbreviated handshakes when renegotiating using the function
4506 SSL_renegotiate_abbreviated().
4507 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4509 *) Add call to ENGINE_register_all_complete() to
4510 ENGINE_load_builtin_engines(), so some implementations get used
4511 automatically instead of needing explicit application support.
4514 *) Add support for TLS key exporter as described in RFC5705.
4515 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4517 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4518 a few changes are required:
4520 Add SSL_OP_NO_TLSv1_1 flag.
4521 Add TLSv1_1 methods.
4522 Update version checking logic to handle version 1.1.
4523 Add explicit IV handling (ported from DTLS code).
4524 Add command line options to s_client/s_server.
4527 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4529 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4530 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4531 content decryption and always return the same error. Note: this attack
4532 needs on average 2^20 messages so it only affects automated senders. The
4533 old behaviour can be re-enabled in the CMS code by setting the
4534 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4535 an MMA defence is not necessary.
4536 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4537 this issue. (CVE-2012-0884)
4540 *) Fix CVE-2011-4619: make sure we really are receiving a
4541 client hello before rejecting multiple SGC restarts. Thanks to
4542 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4545 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4547 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4548 Thanks to Antonio Martin, Enterprise Secure Access Research and
4549 Development, Cisco Systems, Inc. for discovering this bug and
4550 preparing a fix. (CVE-2012-0050)
4553 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4555 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4556 of the Vaudenay padding oracle attack on CBC mode encryption
4557 which enables an efficient plaintext recovery attack against
4558 the OpenSSL implementation of DTLS. Their attack exploits timing
4559 differences arising during decryption processing. A research
4560 paper describing this attack can be found at:
4561 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4562 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4563 Security Group at Royal Holloway, University of London
4564 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4565 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4566 for preparing the fix. (CVE-2011-4108)
4567 [Robin Seggelmann, Michael Tuexen]
4569 *) Clear bytes used for block padding of SSL 3.0 records.
4571 [Adam Langley (Google)]
4573 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4574 Kadianakis <desnacked@gmail.com> for discovering this issue and
4575 Adam Langley for preparing the fix. (CVE-2011-4619)
4576 [Adam Langley (Google)]
4578 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4579 [Andrey Kulikov <amdeich@gmail.com>]
4581 *) Prevent malformed RFC3779 data triggering an assertion failure.
4582 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4583 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4584 [Rob Austein <sra@hactrn.net>]
4586 *) Improved PRNG seeding for VOS.
4587 [Paul Green <Paul.Green@stratus.com>]
4589 *) Fix ssl_ciph.c set-up race.
4590 [Adam Langley (Google)]
4592 *) Fix spurious failures in ecdsatest.c.
4593 [Emilia Käsper (Google)]
4595 *) Fix the BIO_f_buffer() implementation (which was mixing different
4596 interpretations of the '..._len' fields).
4597 [Adam Langley (Google)]
4599 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4600 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4601 threads won't reuse the same blinding coefficients.
4603 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4604 lock to call BN_BLINDING_invert_ex, and avoids one use of
4605 BN_BLINDING_update for each BN_BLINDING structure (previously,
4606 the last update always remained unused).
4607 [Emilia Käsper (Google)]
4609 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4610 [Bob Buckholz (Google)]
4612 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4614 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4615 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4616 [Kaspar Brand <ossl@velox.ch>]
4618 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4619 for multi-threaded use of ECDH. (CVE-2011-3210)
4620 [Adam Langley (Google)]
4622 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4625 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4626 signature public key algorithm by using OID xref utilities instead.
4627 Before this you could only use some ECC ciphersuites with SHA1 only.
4630 *) Add protection against ECDSA timing attacks as mentioned in the paper
4631 by Billy Bob Brumley and Nicola Tuveri, see:
4633 http://eprint.iacr.org/2011/232.pdf
4635 [Billy Bob Brumley and Nicola Tuveri]
4637 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4639 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4640 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4642 *) Fix bug in string printing code: if *any* escaping is enabled we must
4643 escape the escape character (backslash) or the resulting string is
4647 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4649 *) Disable code workaround for ancient and obsolete Netscape browsers
4650 and servers: an attacker can use it in a ciphersuite downgrade attack.
4651 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4654 *) Fixed J-PAKE implementation error, originally discovered by
4655 Sebastien Martini, further info and confirmation from Stefan
4656 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4659 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4661 *) Fix extension code to avoid race conditions which can result in a buffer
4662 overrun vulnerability: resumed sessions must not be modified as they can
4663 be shared by multiple threads. CVE-2010-3864
4666 *) Fix WIN32 build system to correctly link an ENGINE directory into
4670 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4672 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4674 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4676 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4678 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4679 context. The operation can be customised via the ctrl mechanism in
4680 case ENGINEs want to include additional functionality.
4683 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4686 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4687 output hashes compatible with older versions of OpenSSL.
4688 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4690 *) Fix compression algorithm handling: if resuming a session use the
4691 compression algorithm of the resumed session instead of determining
4692 it from client hello again. Don't allow server to change algorithm.
4695 *) Add load_crls() function to apps tidying load_certs() too. Add option
4696 to verify utility to allow additional CRLs to be included.
4699 *) Update OCSP request code to permit adding custom headers to the request:
4700 some responders need this.
4703 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4705 [Julia Lawall <julia@diku.dk>]
4707 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4708 needlessly dereferenced structures, used obsolete functions and
4709 didn't handle all updated verify codes correctly.
4712 *) Disable MD2 in the default configuration.
4715 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4716 indicate the initial BIO being pushed or popped. This makes it possible
4717 to determine whether the BIO is the one explicitly called or as a result
4718 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4719 it handles reference counts correctly and doesn't zero out the I/O bio
4720 when it is not being explicitly popped. WARNING: applications which
4721 included workarounds for the old buggy behaviour will need to be modified
4722 or they could free up already freed BIOs.
4725 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4726 renaming to all platforms (within the 0.9.8 branch, this was
4727 done conditionally on Netware platforms to avoid a name clash).
4728 [Guenter <lists@gknw.net>]
4730 *) Add ECDHE and PSK support to DTLS.
4731 [Michael Tuexen <tuexen@fh-muenster.de>]
4733 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4737 *) Add "missing" function EVP_MD_flags() (without this the only way to
4738 retrieve a digest flags is by accessing the structure directly. Update
4739 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4740 or cipher is registered as in the "from" argument. Print out all
4741 registered digests in the dgst usage message instead of manually
4742 attempting to work them out.
4745 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4746 this allows the use of compression and extensions. Change default cipher
4747 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4748 by default unless an application cipher string requests it.
4751 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4752 key ids to find matching certificates and keys but some PKCS#12 files
4753 don't follow the (somewhat unwritten) rules and this strategy fails.
4754 Now just gather all certificates together and the first private key
4755 then look for the first certificate that matches the key.
4758 *) Support use of registered digest and cipher names for dgst and cipher
4759 commands instead of having to add each one as a special case. So now
4766 openssl dgst -sha256 foo
4768 and this works for ENGINE based algorithms too.
4772 *) Update Gost ENGINE to support parameter files.
4773 [Victor B. Wagner <vitus@cryptocom.ru>]
4775 *) Support GeneralizedTime in ca utility.
4776 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4778 *) Enhance the hash format used for certificate directory links. The new
4779 form uses the canonical encoding (meaning equivalent names will work
4780 even if they aren't identical) and uses SHA1 instead of MD5. This form
4781 is incompatible with the older format and as a result c_rehash should
4782 be used to rebuild symbolic links.
4785 *) Make PKCS#8 the default write format for private keys, replacing the
4786 traditional format. This form is standardised, more secure and doesn't
4787 include an implicit MD5 dependency.
4790 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4791 committed to OpenSSL should pass this lot as a minimum.
4794 *) Add session ticket override functionality for use by EAP-FAST.
4795 [Jouni Malinen <j@w1.fi>]
4797 *) Modify HMAC functions to return a value. Since these can be implemented
4798 in an ENGINE errors can occur.
4801 *) Type-checked OBJ_bsearch_ex.
4804 *) Type-checked OBJ_bsearch. Also some constification necessitated
4805 by type-checking. Still to come: TXT_DB, bsearch(?),
4806 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4810 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4811 seconds to a tm structure directly, instead of going through OS
4812 specific date routines. This avoids any issues with OS routines such
4813 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4814 and X509_time_adj_ex() to cover the extended range. The existing
4815 X509_time_adj() is still usable and will no longer have any date issues.
4818 *) Delta CRL support. New use deltas option which will attempt to locate
4819 and search any appropriate delta CRLs available.
4821 This work was sponsored by Google.
4824 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4825 code and add additional score elements. Validate alternate CRL paths
4826 as part of the CRL checking and indicate a new error "CRL path validation
4827 error" in this case. Applications wanting additional details can use
4828 the verify callback and check the new "parent" field. If this is not
4829 NULL CRL path validation is taking place. Existing applications won't
4830 see this because it requires extended CRL support which is off by
4833 This work was sponsored by Google.
4836 *) Support for freshest CRL extension.
4838 This work was sponsored by Google.
4841 *) Initial indirect CRL support. Currently only supported in the CRLs
4842 passed directly and not via lookup. Process certificate issuer
4843 CRL entry extension and lookup CRL entries by bother issuer name
4844 and serial number. Check and process CRL issuer entry in IDP extension.
4846 This work was sponsored by Google.
4849 *) Add support for distinct certificate and CRL paths. The CRL issuer
4850 certificate is validated separately in this case. Only enabled if
4851 an extended CRL support flag is set: this flag will enable additional
4852 CRL functionality in future.
4854 This work was sponsored by Google.
4857 *) Add support for policy mappings extension.
4859 This work was sponsored by Google.
4862 *) Fixes to pathlength constraint, self issued certificate handling,
4863 policy processing to align with RFC3280 and PKITS tests.
4865 This work was sponsored by Google.
4868 *) Support for name constraints certificate extension. DN, email, DNS
4869 and URI types are currently supported.
4871 This work was sponsored by Google.
4874 *) To cater for systems that provide a pointer-based thread ID rather
4875 than numeric, deprecate the current numeric thread ID mechanism and
4876 replace it with a structure and associated callback type. This
4877 mechanism allows a numeric "hash" to be extracted from a thread ID in
4878 either case, and on platforms where pointers are larger than 'long',
4879 mixing is done to help ensure the numeric 'hash' is usable even if it
4880 can't be guaranteed unique. The default mechanism is to use "&errno"
4881 as a pointer-based thread ID to distinguish between threads.
4883 Applications that want to provide their own thread IDs should now use
4884 CRYPTO_THREADID_set_callback() to register a callback that will call
4885 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4887 Note that ERR_remove_state() is now deprecated, because it is tied
4888 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4889 to free the current thread's error state should be replaced by
4890 ERR_remove_thread_state(NULL).
4892 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4893 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4894 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4895 application was previously providing a numeric thread callback that
4896 was inappropriate for distinguishing threads, then uniqueness might
4897 have been obtained with &errno that happened immediately in the
4898 intermediate development versions of OpenSSL; this is no longer the
4899 case, the numeric thread callback will now override the automatic use
4901 [Geoff Thorpe, with help from Bodo Moeller]
4903 *) Initial support for different CRL issuing certificates. This covers a
4904 simple case where the self issued certificates in the chain exist and
4905 the real CRL issuer is higher in the existing chain.
4907 This work was sponsored by Google.
4910 *) Removed effectively defunct crypto/store from the build.
4913 *) Revamp of STACK to provide stronger type-checking. Still to come:
4914 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4915 ASN1_STRING, CONF_VALUE.
4918 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4919 RAM on SSL connections. This option can save about 34k per idle SSL.
4922 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4923 STACK, TXT_DB, bsearch, qsort.
4926 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4927 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4928 support for data, signedData, compressedData, digestedData and
4929 encryptedData, envelopedData types included. Scripts to check against
4930 RFC4134 examples draft and interop and consistency checks of many
4931 content types and variants.
4934 *) Add options to enc utility to support use of zlib compression BIO.
4937 *) Extend mk1mf to support importing of options and assembly language
4938 files from Configure script, currently only included in VC-WIN32.
4939 The assembly language rules can now optionally generate the source
4940 files from the associated perl scripts.
4943 *) Implement remaining functionality needed to support GOST ciphersuites.
4944 Interop testing has been performed using CryptoPro implementations.
4945 [Victor B. Wagner <vitus@cryptocom.ru>]
4947 *) s390x assembler pack.
4950 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4954 *) Implement Opaque PRF Input TLS extension as specified in
4955 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4956 official specification yet and no extension type assignment by
4957 IANA exists, this extension (for now) will have to be explicitly
4958 enabled when building OpenSSL by providing the extension number
4959 to use. For example, specify an option
4961 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4963 to the "config" or "Configure" script to enable the extension,
4964 assuming extension number 0x9527 (which is a completely arbitrary
4965 and unofficial assignment based on the MD5 hash of the Internet
4966 Draft). Note that by doing so, you potentially lose
4967 interoperability with other TLS implementations since these might
4968 be using the same extension number for other purposes.
4970 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4971 opaque PRF input value to use in the handshake. This will create
4972 an internal copy of the length-'len' string at 'src', and will
4973 return non-zero for success.
4975 To get more control and flexibility, provide a callback function
4978 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4979 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4983 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4986 Callback function 'cb' will be called in handshakes, and is
4987 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4988 Argument 'arg' is for application purposes (the value as given to
4989 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4990 be provided to the callback function). The callback function
4991 has to return non-zero to report success: usually 1 to use opaque
4992 PRF input just if possible, or 2 to enforce use of the opaque PRF
4993 input. In the latter case, the library will abort the handshake
4994 if opaque PRF input is not successfully negotiated.
4996 Arguments 'peerinput' and 'len' given to the callback function
4997 will always be NULL and 0 in the case of a client. A server will
4998 see the client's opaque PRF input through these variables if
4999 available (NULL and 0 otherwise). Note that if the server
5000 provides an opaque PRF input, the length must be the same as the
5001 length of the client's opaque PRF input.
5003 Note that the callback function will only be called when creating
5004 a new session (session resumption can resume whatever was
5005 previously negotiated), and will not be called in SSL 2.0
5006 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
5007 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
5008 for applications that need to enforce opaque PRF input.
5012 *) Update ssl code to support digests other than SHA1+MD5 for handshake
5015 [Victor B. Wagner <vitus@cryptocom.ru>]
5017 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5018 RFC4507bis. The encrypted ticket format is an encrypted encoded
5019 SSL_SESSION structure, that way new session features are automatically
5022 If a client application caches session in an SSL_SESSION structure
5023 support is transparent because tickets are now stored in the encoded
5026 The SSL_CTX structure automatically generates keys for ticket
5027 protection in servers so again support should be possible
5028 with no application modification.
5030 If a client or server wishes to disable RFC4507 support then the option
5031 SSL_OP_NO_TICKET can be set.
5033 Add a TLS extension debugging callback to allow the contents of any client
5034 or server extensions to be examined.
5036 This work was sponsored by Google.
5039 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
5040 OpenSSL should now compile cleanly on gcc 4.2
5041 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
5043 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
5044 support including streaming MAC support: this is required for GOST
5045 ciphersuite support.
5046 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
5048 *) Add option -stream to use PKCS#7 streaming in smime utility. New
5049 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
5050 to output in BER and PEM format.
5053 *) Experimental support for use of HMAC via EVP_PKEY interface. This
5054 allows HMAC to be handled via the EVP_DigestSign*() interface. The
5055 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
5056 ENGINE support for HMAC keys which are unextractable. New -mac and
5057 -macopt options to dgst utility.
5060 *) New option -sigopt to dgst utility. Update dgst to use
5061 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
5062 alternative signing parameters such as X9.31 or PSS in the dgst
5066 *) Change ssl_cipher_apply_rule(), the internal function that does
5067 the work each time a ciphersuite string requests enabling
5068 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
5069 removing ("!foo+bar") a class of ciphersuites: Now it maintains
5070 the order of disabled ciphersuites such that those ciphersuites
5071 that most recently went from enabled to disabled not only stay
5072 in order with respect to each other, but also have higher priority
5073 than other disabled ciphersuites the next time ciphersuites are
5076 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
5077 the same ciphersuites as with "HIGH" alone, but in a specific
5078 order where the PSK ciphersuites come first (since they are the
5079 most recently disabled ciphersuites when "HIGH" is parsed).
5081 Also, change ssl_create_cipher_list() (using this new
5082 functionality) such that between otherwise identical
5083 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
5087 *) Change ssl_create_cipher_list() so that it automatically
5088 arranges the ciphersuites in reasonable order before starting
5089 to process the rule string. Thus, the definition for "DEFAULT"
5090 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
5091 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
5092 This makes it much easier to arrive at a reasonable default order
5093 in applications for which anonymous ciphers are OK (meaning
5094 that you can't actually use DEFAULT).
5095 [Bodo Moeller; suggested by Victor Duchovni]
5097 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
5098 processing) into multiple integers instead of setting
5099 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
5100 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
5101 (These masks as well as the individual bit definitions are hidden
5102 away into the non-exported interface ssl/ssl_locl.h, so this
5103 change to the definition of the SSL_CIPHER structure shouldn't
5104 affect applications.) This give us more bits for each of these
5105 categories, so there is no longer a need to coagulate AES128 and
5106 AES256 into a single algorithm bit, and to coagulate Camellia128
5107 and Camellia256 into a single algorithm bit, which has led to all
5110 Thus, among other things, the kludge introduced in 0.9.7m and
5111 0.9.8e for masking out AES256 independently of AES128 or masking
5112 out Camellia256 independently of AES256 is not needed here in 0.9.9.
5114 With the change, we also introduce new ciphersuite aliases that
5115 so far were missing: "AES128", "AES256", "CAMELLIA128", and
5119 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
5120 Use the leftmost N bytes of the signature input if the input is
5121 larger than the prime q (with N being the size in bytes of q).
5124 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
5125 it yet and it is largely untested.
5128 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
5131 *) Initial incomplete changes to avoid need for function casts in OpenSSL
5132 some compilers (gcc 4.2 and later) reject their use. Safestack is
5133 reimplemented. Update ASN1 to avoid use of legacy functions.
5136 *) Win32/64 targets are linked with Winsock2.
5139 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
5140 to external functions. This can be used to increase CRL handling
5141 efficiency especially when CRLs are very large by (for example) storing
5142 the CRL revoked certificates in a database.
5145 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
5146 new CRLs added to a directory can be used. New command line option
5147 -verify_return_error to s_client and s_server. This causes real errors
5148 to be returned by the verify callback instead of carrying on no matter
5149 what. This reflects the way a "real world" verify callback would behave.
5152 *) GOST engine, supporting several GOST algorithms and public key formats.
5153 Kindly donated by Cryptocom.
5156 *) Partial support for Issuing Distribution Point CRL extension. CRLs
5157 partitioned by DP are handled but no indirect CRL or reason partitioning
5158 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
5159 selected via a scoring technique which handles IDP and AKID in CRLs.
5162 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
5163 will ultimately be used for all verify operations: this will remove the
5164 X509_STORE dependency on certificate verification and allow alternative
5165 lookup methods. X509_STORE based implementations of these two callbacks.
5168 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
5169 Modify get_crl() to find a valid (unexpired) CRL if possible.
5172 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
5173 this would be called X509_CRL_cmp() but that name is already used by
5174 a function that just compares CRL issuer names. Cache several CRL
5175 extensions in X509_CRL structure and cache CRLDP in X509.
5178 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
5179 this maps equivalent X509_NAME structures into a consistent structure.
5180 Name comparison can then be performed rapidly using memcmp().
5183 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
5187 *) Allow digests to supply their own micalg string for S/MIME type using
5188 the ctrl EVP_MD_CTRL_MICALG.
5191 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
5192 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
5193 ctrl. It can then customise the structure before and/or after signing
5197 *) New function OBJ_add_sigid() to allow application defined signature OIDs
5198 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
5199 to free up any added signature OIDs.
5202 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
5203 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
5204 digest and cipher tables. New options added to openssl utility:
5205 list-message-digest-algorithms and list-cipher-algorithms.
5208 *) Change the array representation of binary polynomials: the list
5209 of degrees of non-zero coefficients is now terminated with -1.
5210 Previously it was terminated with 0, which was also part of the
5211 value; thus, the array representation was not applicable to
5212 polynomials where t^0 has coefficient zero. This change makes
5213 the array representation useful in a more general context.
5216 *) Various modifications and fixes to SSL/TLS cipher string
5217 handling. For ECC, the code now distinguishes between fixed ECDH
5218 with RSA certificates on the one hand and with ECDSA certificates
5219 on the other hand, since these are separate ciphersuites. The
5220 unused code for Fortezza ciphersuites has been removed.
5222 For consistency with EDH, ephemeral ECDH is now called "EECDH"
5223 (not "ECDHE"). For consistency with the code for DH
5224 certificates, use of ECDH certificates is now considered ECDH
5225 authentication, not RSA or ECDSA authentication (the latter is
5226 merely the CA's signing algorithm and not actively used in the
5229 The temporary ciphersuite alias "ECCdraft" is no longer
5230 available, and ECC ciphersuites are no longer excluded from "ALL"
5231 and "DEFAULT". The following aliases now exist for RFC 4492
5232 ciphersuites, most of these by analogy with the DH case:
5234 kECDHr - ECDH cert, signed with RSA
5235 kECDHe - ECDH cert, signed with ECDSA
5236 kECDH - ECDH cert (signed with either RSA or ECDSA)
5237 kEECDH - ephemeral ECDH
5238 ECDH - ECDH cert or ephemeral ECDH
5244 AECDH - anonymous ECDH
5245 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
5249 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
5250 Use correct micalg parameters depending on digest(s) in signed message.
5253 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
5254 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
5257 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
5258 an engine to register a method. Add ENGINE lookups for methods and
5259 functional reference processing.
5262 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
5263 EVP_{Sign,Verify}* which allow an application to customise the signature
5267 *) New -resign option to smime utility. This adds one or more signers
5268 to an existing PKCS#7 signedData structure. Also -md option to use an
5269 alternative message digest algorithm for signing.
5272 *) Tidy up PKCS#7 routines and add new functions to make it easier to
5273 create PKCS7 structures containing multiple signers. Update smime
5274 application to support multiple signers.
5277 *) New -macalg option to pkcs12 utility to allow setting of an alternative
5281 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
5282 Reorganize PBE internals to lookup from a static table using NIDs,
5283 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
5284 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
5285 PRF which will be automatically used with PBES2.
5288 *) Replace the algorithm specific calls to generate keys in "req" with the
5292 *) Update PKCS#7 enveloped data routines to use new API. This is now
5293 supported by any public key method supporting the encrypt operation. A
5294 ctrl is added to allow the public key algorithm to examine or modify
5295 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
5299 *) Add a ctrl to asn1 method to allow a public key algorithm to express
5300 a default digest type to use. In most cases this will be SHA1 but some
5301 algorithms (such as GOST) need to specify an alternative digest. The
5302 return value indicates how strong the preference is 1 means optional and
5303 2 is mandatory (that is it is the only supported type). Modify
5304 ASN1_item_sign() to accept a NULL digest argument to indicate it should
5305 use the default md. Update openssl utilities to use the default digest
5306 type for signing if it is not explicitly indicated.
5309 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
5310 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
5311 signing method from the key type. This effectively removes the link
5312 between digests and public key types.
5315 *) Add an OID cross reference table and utility functions. Its purpose is to
5316 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
5317 rsaEncryption. This will allow some of the algorithm specific hackery
5318 needed to use the correct OID to be removed.
5321 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
5322 structures for PKCS7_sign(). They are now set up by the relevant public
5326 *) Add provisional EC pkey method with support for ECDSA and ECDH.
5329 *) Add support for key derivation (agreement) in the API, DH method and
5333 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
5334 public and private key formats. As a side effect these add additional
5335 command line functionality not previously available: DSA signatures can be
5336 generated and verified using pkeyutl and DH key support and generation in
5341 [Oliver Tappe <zooey@hirschkaefer.de>]
5343 *) New make target "install_html_docs" installs HTML renditions of the
5345 [Oliver Tappe <zooey@hirschkaefer.de>]
5347 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
5348 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
5349 support key and parameter generation and add initial key generation
5350 functionality for RSA.
5353 *) Add functions for main EVP_PKEY_method operations. The undocumented
5354 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
5355 EVP_PKEY_{encrypt,decrypt}_old.
5358 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
5359 key API, doesn't do much yet.
5362 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
5363 public key algorithms. New option to openssl utility:
5364 "list-public-key-algorithms" to print out info.
5367 *) Implement the Supported Elliptic Curves Extension for
5368 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5371 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
5372 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
5375 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
5376 utilities such as rsa, dsa, dsaparam etc except they process any key
5380 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
5381 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
5382 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
5386 *) Initial support for pluggable public key ASN1.
5387 De-spaghettify the public key ASN1 handling. Move public and private
5388 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
5389 algorithm specific handling to a single module within the relevant
5390 algorithm directory. Add functions to allow (near) opaque processing
5391 of public and private key structures.
5394 *) Implement the Supported Point Formats Extension for
5395 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5398 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
5399 for the psk identity [hint] and the psk callback functions to the
5400 SSL_SESSION, SSL and SSL_CTX structure.
5403 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
5407 SSL_CTX_use_psk_identity_hint
5408 SSL_get_psk_identity_hint
5409 SSL_get_psk_identity
5410 SSL_use_psk_identity_hint
5412 [Mika Kousa and Pasi Eronen of Nokia Corporation]
5414 *) Add RFC 3161 compliant time stamp request creation, response generation
5415 and response verification functionality.
5416 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
5418 *) Add initial support for TLS extensions, specifically for the server_name
5419 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5420 have new members for a host name. The SSL data structure has an
5421 additional member SSL_CTX *initial_ctx so that new sessions can be
5422 stored in that context to allow for session resumption, even after the
5423 SSL has been switched to a new SSL_CTX in reaction to a client's
5424 server_name extension.
5426 New functions (subject to change):
5428 SSL_get_servername()
5429 SSL_get_servername_type()
5432 New CTRL codes and macros (subject to change):
5434 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5435 - SSL_CTX_set_tlsext_servername_callback()
5436 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5437 - SSL_CTX_set_tlsext_servername_arg()
5438 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5440 openssl s_client has a new '-servername ...' option.
5442 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5443 '-key2 ...', '-servername_fatal' (subject to change). This allows
5444 testing the HostName extension for a specific single host name ('-cert'
5445 and '-key' remain fallbacks for handshakes without HostName
5446 negotiation). If the unrecognized_name alert has to be sent, this by
5447 default is a warning; it becomes fatal with the '-servername_fatal'
5450 [Peter Sylvester, Remy Allais, Christophe Renou]
5452 *) Whirlpool hash implementation is added.
5455 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
5456 bn(64,32). Because of instruction set limitations it doesn't have
5457 any negative impact on performance. This was done mostly in order
5458 to make it possible to share assembler modules, such as bn_mul_mont
5459 implementations, between 32- and 64-bit builds without hassle.
5462 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
5463 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
5467 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
5468 dedicated Montgomery multiplication procedure, is introduced.
5469 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
5470 "64-bit" performance on certain 32-bit targets.
5473 *) New option SSL_OP_NO_COMP to disable use of compression selectively
5474 in SSL structures. New SSL ctrl to set maximum send fragment size.
5475 Save memory by setting the I/O buffer sizes dynamically instead of
5476 using the maximum available value.
5479 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
5480 in addition to the text details.
5483 *) Very, very preliminary EXPERIMENTAL support for printing of general
5484 ASN1 structures. This currently produces rather ugly output and doesn't
5485 handle several customised structures at all.
5488 *) Integrated support for PVK file format and some related formats such
5489 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5490 these in the 'rsa' and 'dsa' utilities.
5493 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5496 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5497 place for the (very old) "NETSCAPE" format certificates which are now
5498 handled using new ASN1 code equivalents.
5501 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5502 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5503 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5506 *) Modify CRL distribution points extension code to print out previously
5507 unsupported fields. Enhance extension setting code to allow setting of
5511 *) Add print and set support for Issuing Distribution Point CRL extension.
5514 *) Change 'Configure' script to enable Camellia by default.
5517 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5519 *) When rejecting SSL/TLS records due to an incorrect version number, never
5520 update s->server with a new major version number. As of
5521 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5522 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5523 the previous behavior could result in a read attempt at NULL when
5524 receiving specific incorrect SSL/TLS records once record payload
5525 protection is active. (CVE-2010-0740)
5526 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5528 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5529 could be crashed if the relevant tables were not present (e.g. chrooted).
5530 [Tomas Hoger <thoger@redhat.com>]
5532 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5534 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5535 [Martin Olsson, Neel Mehta]
5537 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5538 accommodate for stack sorting, always a write lock!).
5541 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5542 excessive delays in the RAND_poll(): over a minute. As a workaround
5543 include a time check in the inner Heap32Next loop too.
5546 *) The code that handled flushing of data in SSL/TLS originally used the
5547 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5548 the problem outlined in PR#1949. The fix suggested there however can
5549 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5550 of Apache). So instead simplify the code to flush unconditionally.
5551 This should be fine since flushing with no data to flush is a no op.
5554 *) Handle TLS versions 2.0 and later properly and correctly use the
5555 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5556 off ancient servers have a habit of sticking around for a while...
5559 *) Modify compression code so it frees up structures without using the
5560 ex_data callbacks. This works around a problem where some applications
5561 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5562 restarting) then use compression (e.g. SSL with compression) later.
5563 This results in significant per-connection memory leaks and
5564 has caused some security issues including CVE-2008-1678 and
5568 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5569 change when encrypting or decrypting.
5572 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5573 connect and renegotiate with servers which do not support RI.
5574 Until RI is more widely deployed this option is enabled by default.
5577 *) Add "missing" ssl ctrls to clear options and mode.
5580 *) If client attempts to renegotiate and doesn't support RI respond with
5581 a no_renegotiation alert as required by RFC5746. Some renegotiating
5582 TLS clients will continue a connection gracefully when they receive
5583 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5584 waiting for a server hello which it will never receive. Now we treat a
5585 received no_renegotiation alert as a fatal error. This is because
5586 applications requesting a renegotiation might well expect it to succeed
5587 and would have no code in place to handle the server denying it so the
5588 only safe thing to do is to terminate the connection.
5591 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5592 peer supports secure renegotiation and 0 otherwise. Print out peer
5593 renegotiation support in s_client/s_server.
5596 *) Replace the highly broken and deprecated SPKAC certification method with
5597 the updated NID creation version. This should correctly handle UTF8.
5600 *) Implement RFC5746. Re-enable renegotiation but require the extension
5601 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5602 turns out to be a bad idea. It has been replaced by
5603 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5604 SSL_CTX_set_options(). This is really not recommended unless you
5605 know what you are doing.
5606 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5608 *) Fixes to stateless session resumption handling. Use initial_ctx when
5609 issuing and attempting to decrypt tickets in case it has changed during
5610 servername handling. Use a non-zero length session ID when attempting
5611 stateless session resumption: this makes it possible to determine if
5612 a resumption has occurred immediately after receiving server hello
5613 (several places in OpenSSL subtly assume this) instead of later in
5617 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5618 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5619 fixes for a few places where the return code is not checked
5621 [Julia Lawall <julia@diku.dk>]
5623 *) Add --strict-warnings option to Configure script to include devteam
5624 warnings in other configurations.
5627 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5628 makes it possible to install openssl libraries in locations which
5629 have names other than "lib", for example "/usr/lib64" which some
5631 [Steve Henson, based on patch from Jeremy Utley]
5633 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5634 X690 8.9.12 and can produce some misleading textual output of OIDs.
5635 [Steve Henson, reported by Dan Kaminsky]
5637 *) Delete MD2 from algorithm tables. This follows the recommendation in
5638 several standards that it is not used in new applications due to
5639 several cryptographic weaknesses. For binary compatibility reasons
5640 the MD2 API is still compiled in by default.
5643 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5647 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5648 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5650 [Guenter <lists@gknw.net>]
5652 *) Fix the server certificate chain building code to use X509_verify_cert(),
5653 it used to have an ad-hoc builder which was unable to cope with anything
5654 other than a simple chain.
5655 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5657 *) Don't check self signed certificate signatures in X509_verify_cert()
5658 by default (a flag can override this): it just wastes time without
5659 adding any security. As a useful side effect self signed root CAs
5660 with non-FIPS digests are now usable in FIPS mode.
5663 *) In dtls1_process_out_of_seq_message() the check if the current message
5664 is already buffered was missing. For every new message was memory
5665 allocated, allowing an attacker to perform an denial of service attack
5666 with sending out of seq handshake messages until there is no memory
5667 left. Additionally every future message was buffered, even if the
5668 sequence number made no sense and would be part of another handshake.
5669 So only messages with sequence numbers less than 10 in advance will be
5670 buffered. (CVE-2009-1378)
5671 [Robin Seggelmann, discovered by Daniel Mentz]
5673 *) Records are buffered if they arrive with a future epoch to be
5674 processed after finishing the corresponding handshake. There is
5675 currently no limitation to this buffer allowing an attacker to perform
5676 a DOS attack with sending records with future epochs until there is no
5677 memory left. This patch adds the pqueue_size() function to determine
5678 the size of a buffer and limits the record buffer to 100 entries.
5680 [Robin Seggelmann, discovered by Daniel Mentz]
5682 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5683 parent structure is freed. (CVE-2009-1379)
5686 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5687 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5690 [Ilya O. <vrghost@gmail.com>]
5692 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5694 *) Disable renegotiation completely - this fixes a severe security
5695 problem (CVE-2009-3555) at the cost of breaking all
5696 renegotiation. Renegotiation can be re-enabled by setting
5697 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5698 run-time. This is really not recommended unless you know what
5702 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5704 *) Don't set val to NULL when freeing up structures, it is freed up by
5705 underlying code. If sizeof(void *) > sizeof(long) this can result in
5706 zeroing past the valid field. (CVE-2009-0789)
5707 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5709 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5710 checked correctly. This would allow some invalid signed attributes to
5711 appear to verify correctly. (CVE-2009-0591)
5712 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5714 *) Reject UniversalString and BMPString types with invalid lengths. This
5715 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5716 a legal length. (CVE-2009-0590)
5719 *) Set S/MIME signing as the default purpose rather than setting it
5720 unconditionally. This allows applications to override it at the store
5724 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5725 to handle some structures.
5728 *) Improve efficiency of mem_gets: don't search whole buffer each time
5730 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5732 *) New -hex option for openssl rand.
5735 *) Print out UTF8String and NumericString when parsing ASN1.
5738 *) Support NumericString type for name components.
5741 *) Allow CC in the environment to override the automatically chosen
5742 compiler. Note that nothing is done to ensure flags work with the
5746 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5748 *) Properly check EVP_VerifyFinal() and similar return values
5750 [Ben Laurie, Bodo Moeller, Google Security Team]
5752 *) Enable TLS extensions by default.
5755 *) Allow the CHIL engine to be loaded, whether the application is
5756 multithreaded or not. (This does not release the developer from the
5757 obligation to set up the dynamic locking callbacks.)
5758 [Sander Temme <sander@temme.net>]
5760 *) Use correct exit code if there is an error in dgst command.
5761 [Steve Henson; problem pointed out by Roland Dirlewanger]
5763 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5764 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5767 *) Add experimental JPAKE support, including demo authentication in
5768 s_client and s_server.
5771 *) Set the comparison function in v3_addr_canonize().
5772 [Rob Austein <sra@hactrn.net>]
5774 *) Add support for XMPP STARTTLS in s_client.
5775 [Philip Paeps <philip@freebsd.org>]
5777 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5778 to ensure that even with this option, only ciphersuites in the
5779 server's preference list will be accepted. (Note that the option
5780 applies only when resuming a session, so the earlier behavior was
5781 just about the algorithm choice for symmetric cryptography.)
5784 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5786 *) Fix NULL pointer dereference if a DTLS server received
5787 ChangeCipherSpec as first record (CVE-2009-1386).
5790 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5791 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5794 *) The fix in 0.9.8c that supposedly got rid of unsafe
5795 double-checked locking was incomplete for RSA blinding,
5796 addressing just one layer of what turns out to have been
5797 doubly unsafe triple-checked locking.
5799 So now fix this for real by retiring the MONT_HELPER macro
5800 in crypto/rsa/rsa_eay.c.
5802 [Bodo Moeller; problem pointed out by Marius Schilder]
5804 *) Various precautionary measures:
5806 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5808 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5809 (NB: This would require knowledge of the secret session ticket key
5810 to exploit, in which case you'd be SOL either way.)
5812 - Change bn_nist.c so that it will properly handle input BIGNUMs
5813 outside the expected range.
5815 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5818 [Neel Mehta, Bodo Moeller]
5820 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5821 the load fails. Useful for distros.
5822 [Ben Laurie and the FreeBSD team]
5824 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5827 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5830 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5832 This work was sponsored by Logica.
5835 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5836 keystores. Support for SSL/TLS client authentication too.
5837 Not compiled unless enable-capieng specified to Configure.
5839 This work was sponsored by Logica.
5842 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5843 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5844 attribute creation routines such as certificate requests and PKCS#12
5848 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5850 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5851 handshake which could lead to a client crash as found using the
5852 Codenomicon TLS test suite (CVE-2008-1672)
5853 [Steve Henson, Mark Cox]
5855 *) Fix double free in TLS server name extensions which could lead to
5856 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5859 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5861 Clear the error queue to ensure that error entries left from
5862 older function calls do not interfere with the correct operation.
5863 [Lutz Jaenicke, Erik de Castro Lopo]
5865 *) Remove root CA certificates of commercial CAs:
5867 The OpenSSL project does not recommend any specific CA and does not
5868 have any policy with respect to including or excluding any CA.
5869 Therefore it does not make any sense to ship an arbitrary selection
5870 of root CA certificates with the OpenSSL software.
5873 *) RSA OAEP patches to fix two separate invalid memory reads.
5874 The first one involves inputs when 'lzero' is greater than
5875 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5876 before the beginning of from). The second one involves inputs where
5877 the 'db' section contains nothing but zeroes (there is a one-byte
5878 invalid read after the end of 'db').
5879 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5881 *) Partial backport from 0.9.9-dev:
5883 Introduce bn_mul_mont (dedicated Montgomery multiplication
5884 procedure) as a candidate for BIGNUM assembler implementation.
5885 While 0.9.9-dev uses assembler for various architectures, only
5886 x86_64 is available by default here in the 0.9.8 branch, and
5887 32-bit x86 is available through a compile-time setting.
5889 To try the 32-bit x86 assembler implementation, use Configure
5890 option "enable-montasm" (which exists only for this backport).
5892 As "enable-montasm" for 32-bit x86 disclaims code stability
5893 anyway, in this constellation we activate additional code
5894 backported from 0.9.9-dev for further performance improvements,
5895 namely BN_from_montgomery_word. (To enable this otherwise,
5896 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5898 [Andy Polyakov (backport partially by Bodo Moeller)]
5900 *) Add TLS session ticket callback. This allows an application to set
5901 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5902 values. This is useful for key rollover for example where several key
5903 sets may exist with different names.
5906 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5907 This was broken until now in 0.9.8 releases, such that the only way
5908 a registered ENGINE could be used (assuming it initialises
5909 successfully on the host) was to explicitly set it as the default
5910 for the relevant algorithms. This is in contradiction with 0.9.7
5911 behaviour and the documentation. With this fix, when an ENGINE is
5912 registered into a given algorithm's table of implementations, the
5913 'uptodate' flag is reset so that auto-discovery will be used next
5914 time a new context for that algorithm attempts to select an
5916 [Ian Lister (tweaked by Geoff Thorpe)]
5918 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5919 implementation in the following ways:
5921 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5924 Lack of BER streaming support means one pass streaming processing is
5925 only supported if data is detached: setting the streaming flag is
5926 ignored for embedded content.
5928 CMS support is disabled by default and must be explicitly enabled
5929 with the enable-cms configuration option.
5932 *) Update the GMP engine glue to do direct copies between BIGNUM and
5933 mpz_t when openssl and GMP use the same limb size. Otherwise the
5934 existing "conversion via a text string export" trick is still used.
5935 [Paul Sheer <paulsheer@gmail.com>]
5937 *) Zlib compression BIO. This is a filter BIO which compressed and
5938 uncompresses any data passed through it.
5941 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5942 RFC3394 compatible AES key wrapping.
5945 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5946 sets string data without copying. X509_ALGOR_set0() and
5947 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5948 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5949 from an X509_ATTRIBUTE structure optionally checking it occurs only
5950 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5954 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5955 to get the expected BN_FLG_CONSTTIME behavior.
5956 [Bodo Moeller (Google)]
5960 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5961 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5962 - added some more tests to do_tests.pl
5963 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5964 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5965 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5966 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5967 - various changes to netware.pl to enable gcc-cross builds on Win32
5969 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5970 - various changes to fix missing prototype warnings
5971 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5972 - added AES, WHIRLPOOL and CPUID assembler code to build files
5973 - added missing AES assembler make rules to mk1mf.pl
5974 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5975 [Guenter Knauf <eflash@gmx.net>]
5977 *) Implement certificate status request TLS extension defined in RFC3546.
5978 A client can set the appropriate parameters and receive the encoded
5979 OCSP response via a callback. A server can query the supplied parameters
5980 and set the encoded OCSP response in the callback. Add simplified examples
5981 to s_client and s_server.
5984 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5986 *) Fix various bugs:
5987 + Binary incompatibility of ssl_ctx_st structure
5988 + DTLS interoperation with non-compliant servers
5989 + Don't call get_session_cb() without proposed session
5990 + Fix ia64 assembler code
5991 [Andy Polyakov, Steve Henson]
5993 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5995 *) DTLS Handshake overhaul. There were longstanding issues with
5996 OpenSSL DTLS implementation, which were making it impossible for
5997 RFC 4347 compliant client to communicate with OpenSSL server.
5998 Unfortunately just fixing these incompatibilities would "cut off"
5999 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
6000 server keeps tolerating non RFC compliant syntax. The opposite is
6001 not true, 0.9.8f client can not communicate with earlier server.
6002 This update even addresses CVE-2007-4995.
6005 *) Changes to avoid need for function casts in OpenSSL: some compilers
6006 (gcc 4.2 and later) reject their use.
6007 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
6010 *) Add RFC4507 support to OpenSSL. This includes the corrections in
6011 RFC4507bis. The encrypted ticket format is an encrypted encoded
6012 SSL_SESSION structure, that way new session features are automatically
6015 If a client application caches session in an SSL_SESSION structure
6016 support is transparent because tickets are now stored in the encoded
6019 The SSL_CTX structure automatically generates keys for ticket
6020 protection in servers so again support should be possible
6021 with no application modification.
6023 If a client or server wishes to disable RFC4507 support then the option
6024 SSL_OP_NO_TICKET can be set.
6026 Add a TLS extension debugging callback to allow the contents of any client
6027 or server extensions to be examined.
6029 This work was sponsored by Google.
6032 *) Add initial support for TLS extensions, specifically for the server_name
6033 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
6034 have new members for a host name. The SSL data structure has an
6035 additional member SSL_CTX *initial_ctx so that new sessions can be
6036 stored in that context to allow for session resumption, even after the
6037 SSL has been switched to a new SSL_CTX in reaction to a client's
6038 server_name extension.
6040 New functions (subject to change):
6042 SSL_get_servername()
6043 SSL_get_servername_type()
6046 New CTRL codes and macros (subject to change):
6048 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
6049 - SSL_CTX_set_tlsext_servername_callback()
6050 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
6051 - SSL_CTX_set_tlsext_servername_arg()
6052 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
6054 openssl s_client has a new '-servername ...' option.
6056 openssl s_server has new options '-servername_host ...', '-cert2 ...',
6057 '-key2 ...', '-servername_fatal' (subject to change). This allows
6058 testing the HostName extension for a specific single host name ('-cert'
6059 and '-key' remain fallbacks for handshakes without HostName
6060 negotiation). If the unrecognized_name alert has to be sent, this by
6061 default is a warning; it becomes fatal with the '-servername_fatal'
6064 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
6066 *) Add AES and SSE2 assembly language support to VC++ build.
6069 *) Mitigate attack on final subtraction in Montgomery reduction.
6072 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
6073 (which previously caused an internal error).
6076 *) Squeeze another 10% out of IGE mode when in != out.
6079 *) AES IGE mode speedup.
6080 [Dean Gaudet (Google)]
6082 *) Add the Korean symmetric 128-bit cipher SEED (see
6083 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
6084 add SEED ciphersuites from RFC 4162:
6086 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
6087 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
6088 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
6089 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
6091 To minimize changes between patchlevels in the OpenSSL 0.9.8
6092 series, SEED remains excluded from compilation unless OpenSSL
6093 is configured with 'enable-seed'.
6094 [KISA, Bodo Moeller]
6096 *) Mitigate branch prediction attacks, which can be practical if a
6097 single processor is shared, allowing a spy process to extract
6098 information. For detailed background information, see
6099 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
6100 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
6101 and Necessary Software Countermeasures"). The core of the change
6102 are new versions BN_div_no_branch() and
6103 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
6104 respectively, which are slower, but avoid the security-relevant
6105 conditional branches. These are automatically called by BN_div()
6106 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
6107 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
6108 remove a conditional branch.
6110 BN_FLG_CONSTTIME is the new name for the previous
6111 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
6112 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
6113 in the exponent causes BN_mod_exp_mont() to use the alternative
6114 implementation in BN_mod_exp_mont_consttime().) The old name
6115 remains as a deprecated alias.
6117 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
6118 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
6119 constant-time implementations for more than just exponentiation.
6120 Here too the old name is kept as a deprecated alias.
6122 BN_BLINDING_new() will now use BN_dup() for the modulus so that
6123 the BN_BLINDING structure gets an independent copy of the
6124 modulus. This means that the previous "BIGNUM *m" argument to
6125 BN_BLINDING_new() and to BN_BLINDING_create_param() now
6126 essentially becomes "const BIGNUM *m", although we can't actually
6127 change this in the header file before 0.9.9. It allows
6128 RSA_setup_blinding() to use BN_with_flags() on the modulus to
6129 enable BN_FLG_CONSTTIME.
6131 [Matthew D Wood (Intel Corp)]
6133 *) In the SSL/TLS server implementation, be strict about session ID
6134 context matching (which matters if an application uses a single
6135 external cache for different purposes). Previously,
6136 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
6137 set. This did ensure strict client verification, but meant that,
6138 with applications using a single external cache for quite
6139 different requirements, clients could circumvent ciphersuite
6140 restrictions for a given session ID context by starting a session
6141 in a different context.
6144 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6145 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6146 authentication-only ciphersuites.
6149 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
6150 not complete and could lead to a possible single byte overflow
6151 (CVE-2007-5135) [Ben Laurie]
6153 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
6155 *) Since AES128 and AES256 (and similarly Camellia128 and
6156 Camellia256) share a single mask bit in the logic of
6157 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6158 kludge to work properly if AES128 is available and AES256 isn't
6159 (or if Camellia128 is available and Camellia256 isn't).
6162 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
6163 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
6164 When a point or a seed is encoded in a BIT STRING, we need to
6165 prevent the removal of trailing zero bits to get the proper DER
6166 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
6167 of a NamedBitList, for which trailing 0 bits need to be removed.)
6170 *) Have SSL/TLS server implementation tolerate "mismatched" record
6171 protocol version while receiving ClientHello even if the
6172 ClientHello is fragmented. (The server can't insist on the
6173 particular protocol version it has chosen before the ServerHello
6174 message has informed the client about his choice.)
6177 *) Add RFC 3779 support.
6178 [Rob Austein for ARIN, Ben Laurie]
6180 *) Load error codes if they are not already present instead of using a
6181 static variable. This allows them to be cleanly unloaded and reloaded.
6182 Improve header file function name parsing.
6185 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
6186 or CAPABILITY handshake as required by RFCs.
6189 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
6191 *) Introduce limits to prevent malicious keys being able to
6192 cause a denial of service. (CVE-2006-2940)
6193 [Steve Henson, Bodo Moeller]
6195 *) Fix ASN.1 parsing of certain invalid structures that can result
6196 in a denial of service. (CVE-2006-2937) [Steve Henson]
6198 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6199 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6201 *) Fix SSL client code which could crash if connecting to a
6202 malicious SSLv2 server. (CVE-2006-4343)
6203 [Tavis Ormandy and Will Drewry, Google Security Team]
6205 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
6206 match only those. Before that, "AES256-SHA" would be interpreted
6207 as a pattern and match "AES128-SHA" too (since AES128-SHA got
6208 the same strength classification in 0.9.7h) as we currently only
6209 have a single AES bit in the ciphersuite description bitmap.
6210 That change, however, also applied to ciphersuite strings such as
6211 "RC4-MD5" that intentionally matched multiple ciphersuites --
6212 namely, SSL 2.0 ciphersuites in addition to the more common ones
6213 from SSL 3.0/TLS 1.0.
6215 So we change the selection algorithm again: Naming an explicit
6216 ciphersuite selects this one ciphersuite, and any other similar
6217 ciphersuite (same bitmap) from *other* protocol versions.
6218 Thus, "RC4-MD5" again will properly select both the SSL 2.0
6219 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
6221 Since SSL 2.0 does not have any ciphersuites for which the
6222 128/256 bit distinction would be relevant, this works for now.
6223 The proper fix will be to use different bits for AES128 and
6224 AES256, which would have avoided the problems from the beginning;
6225 however, bits are scarce, so we can only do this in a new release
6226 (not just a patchlevel) when we can change the SSL_CIPHER
6227 definition to split the single 'unsigned long mask' bitmap into
6228 multiple values to extend the available space.
6232 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
6234 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6235 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6237 *) Add AES IGE and biIGE modes.
6240 *) Change the Unix randomness entropy gathering to use poll() when
6241 possible instead of select(), since the latter has some
6242 undesirable limitations.
6243 [Darryl Miles via Richard Levitte and Bodo Moeller]
6245 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
6246 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
6247 cannot be implicitly activated as part of, e.g., the "AES" alias.
6248 However, please upgrade to OpenSSL 0.9.9[-dev] for
6249 non-experimental use of the ECC ciphersuites to get TLS extension
6250 support, which is required for curve and point format negotiation
6251 to avoid potential handshake problems.
6254 *) Disable rogue ciphersuites:
6256 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6257 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6258 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6260 The latter two were purportedly from
6261 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6264 Also deactivate the remaining ciphersuites from
6265 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6266 unofficial, and the ID has long expired.
6269 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6270 dual-core machines) and other potential thread-safety issues.
6273 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
6274 versions), which is now available for royalty-free use
6275 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
6276 Also, add Camellia TLS ciphersuites from RFC 4132.
6278 To minimize changes between patchlevels in the OpenSSL 0.9.8
6279 series, Camellia remains excluded from compilation unless OpenSSL
6280 is configured with 'enable-camellia'.
6283 *) Disable the padding bug check when compression is in use. The padding
6284 bug check assumes the first packet is of even length, this is not
6285 necessarily true if compression is enabled and can result in false
6286 positives causing handshake failure. The actual bug test is ancient
6287 code so it is hoped that implementations will either have fixed it by
6288 now or any which still have the bug do not support compression.
6291 Changes between 0.9.8a and 0.9.8b [04 May 2006]
6293 *) When applying a cipher rule check to see if string match is an explicit
6294 cipher suite and only match that one cipher suite if it is.
6297 *) Link in manifests for VC++ if needed.
6298 [Austin Ziegler <halostatue@gmail.com>]
6300 *) Update support for ECC-based TLS ciphersuites according to
6301 draft-ietf-tls-ecc-12.txt with proposed changes (but without
6302 TLS extensions, which are supported starting with the 0.9.9
6303 branch, not in the OpenSSL 0.9.8 branch).
6306 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
6307 opaque EVP_CIPHER_CTX handling.
6310 *) Fixes and enhancements to zlib compression code. We now only use
6311 "zlib1.dll" and use the default __cdecl calling convention on Win32
6312 to conform with the standards mentioned here:
6313 http://www.zlib.net/DLL_FAQ.txt
6314 Static zlib linking now works on Windows and the new --with-zlib-include
6315 --with-zlib-lib options to Configure can be used to supply the location
6316 of the headers and library. Gracefully handle case where zlib library
6320 *) Several fixes and enhancements to the OID generation code. The old code
6321 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
6322 handle numbers larger than ULONG_MAX, truncated printing and had a
6323 non standard OBJ_obj2txt() behaviour.
6326 *) Add support for building of engines under engine/ as shared libraries
6327 under VC++ build system.
6330 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
6331 Hopefully, we will not see any false combination of paths any more.
6334 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
6336 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6337 (part of SSL_OP_ALL). This option used to disable the
6338 countermeasure against man-in-the-middle protocol-version
6339 rollback in the SSL 2.0 server implementation, which is a bad
6340 idea. (CVE-2005-2969)
6342 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6343 for Information Security, National Institute of Advanced Industrial
6344 Science and Technology [AIST], Japan)]
6346 *) Add two function to clear and return the verify parameter flags.
6349 *) Keep cipherlists sorted in the source instead of sorting them at
6350 runtime, thus removing the need for a lock.
6353 *) Avoid some small subgroup attacks in Diffie-Hellman.
6354 [Nick Mathewson and Ben Laurie]
6356 *) Add functions for well-known primes.
6359 *) Extended Windows CE support.
6360 [Satoshi Nakamura and Andy Polyakov]
6362 *) Initialize SSL_METHOD structures at compile time instead of during
6363 runtime, thus removing the need for a lock.
6366 *) Make PKCS7_decrypt() work even if no certificate is supplied by
6367 attempting to decrypt each encrypted key in turn. Add support to
6371 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
6373 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
6376 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
6379 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
6380 key into the same file any more.
6383 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
6386 *) Add -utf8 command line and config file option to 'ca'.
6387 [Stefan <stf@udoma.org]
6389 *) Removed the macro des_crypt(), as it seems to conflict with some
6390 libraries. Use DES_crypt().
6393 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
6394 involves renaming the source and generated shared-libs for
6395 both. The engines will accept the corrected or legacy ids
6396 ('ncipher' and '4758_cca' respectively) when binding. NB,
6397 this only applies when building 'shared'.
6398 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
6400 *) Add attribute functions to EVP_PKEY structure. Modify
6401 PKCS12_create() to recognize a CSP name attribute and
6402 use it. Make -CSP option work again in pkcs12 utility.
6405 *) Add new functionality to the bn blinding code:
6406 - automatic re-creation of the BN_BLINDING parameters after
6407 a fixed number of uses (currently 32)
6408 - add new function for parameter creation
6409 - introduce flags to control the update behaviour of the
6410 BN_BLINDING parameters
6411 - hide BN_BLINDING structure
6412 Add a second BN_BLINDING slot to the RSA structure to improve
6413 performance when a single RSA object is shared among several
6417 *) Add support for DTLS.
6418 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
6420 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
6421 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
6424 *) Remove buggy and incomplete DH cert support from
6425 ssl/ssl_rsa.c and ssl/s3_both.c
6428 *) Use SHA-1 instead of MD5 as the default digest algorithm for
6429 the apps/openssl applications.
6432 *) Compile clean with "-Wall -Wmissing-prototypes
6433 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
6434 DEBUG_SAFESTACK must also be set.
6437 *) Change ./Configure so that certain algorithms can be disabled by default.
6438 The new counterpiece to "no-xxx" is "enable-xxx".
6440 The patented RC5 and MDC2 algorithms will now be disabled unless
6441 "enable-rc5" and "enable-mdc2", respectively, are specified.
6443 (IDEA remains enabled despite being patented. This is because IDEA
6444 is frequently required for interoperability, and there is no license
6445 fee for non-commercial use. As before, "no-idea" can be used to
6446 avoid this algorithm.)
6450 *) Add processing of proxy certificates (see RFC 3820). This work was
6451 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
6452 EGEE (Enabling Grids for E-science in Europe).
6455 *) RC4 performance overhaul on modern architectures/implementations, such
6456 as Intel P4, IA-64 and AMD64.
6459 *) New utility extract-section.pl. This can be used specify an alternative
6460 section number in a pod file instead of having to treat each file as
6461 a separate case in Makefile. This can be done by adding two lines to the
6464 =for comment openssl_section:XXX
6466 The blank line is mandatory.
6470 *) New arguments -certform, -keyform and -pass for s_client and s_server
6471 to allow alternative format key and certificate files and passphrase
6475 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
6476 update associated structures and add various utility functions.
6478 Add new policy related verify parameters, include policy checking in
6479 standard verify code. Enhance 'smime' application with extra parameters
6480 to support policy checking and print out.
6483 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
6484 Nehemiah processors. These extensions support AES encryption in hardware
6485 as well as RNG (though RNG support is currently disabled).
6486 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6488 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6491 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6492 [Andy Polyakov and a number of other people]
6494 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6495 implementation contributed by IBM.
6496 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6498 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6499 exponent rather than 'unsigned long'. There is a corresponding change to
6500 the new 'rsa_keygen' element of the RSA_METHOD structure.
6501 [Jelte Jansen, Geoff Thorpe]
6503 *) Functionality for creating the initial serial number file is now
6504 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6506 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6507 number file to 1, which is bound to cause problems. To avoid
6508 the problems while respecting compatibility between different 0.9.7
6509 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6510 CA.pl for serial number initialization. With the new release 0.9.8,
6511 we can fix the problem directly in the 'ca' utility.)
6514 *) Reduced header interdependencies by declaring more opaque objects in
6515 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6516 give fewer recursive includes, which could break lazy source code - so
6517 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6518 developers should define this symbol when building and using openssl to
6519 ensure they track the recommended behaviour, interfaces, [etc], but
6520 backwards-compatible behaviour prevails when this isn't defined.
6523 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6526 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6527 This will generate a random key of the appropriate length based on the
6528 cipher context. The EVP_CIPHER can provide its own random key generation
6529 routine to support keys of a specific form. This is used in the des and
6530 3des routines to generate a key of the correct parity. Update S/MIME
6531 code to use new functions and hence generate correct parity DES keys.
6532 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6533 valid (weak or incorrect parity).
6536 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6537 as looking them up. This is useful when the verified structure may contain
6538 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6539 present unless the new PKCS7_NO_CRL flag is asserted.
6542 *) Extend ASN1 oid configuration module. It now additionally accepts the
6545 shortName = some long name, 1.2.3.4
6548 *) Reimplemented the BN_CTX implementation. There is now no more static
6549 limitation on the number of variables it can handle nor the depth of the
6550 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6551 information can now expand as required, and rather than having a single
6552 static array of bignums, BN_CTX now uses a linked-list of such arrays
6553 allowing it to expand on demand whilst maintaining the usefulness of
6554 BN_CTX's "bundling".
6557 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6558 to allow all RSA operations to function using a single BN_CTX.
6561 *) Preliminary support for certificate policy evaluation and checking. This
6562 is initially intended to pass the tests outlined in "Conformance Testing
6563 of Relying Party Client Certificate Path Processing Logic" v1.07.
6566 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6567 remained unused and not that useful. A variety of other little bignum
6568 tweaks and fixes have also been made continuing on from the audit (see
6572 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6573 associated ASN1, EVP and SSL functions and old ASN1 macros.
6576 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6577 and this should never fail. So the return value from the use of
6578 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6579 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6582 *) BN_CTX_get() should return zero-valued bignums, providing the same
6583 initialised value as BN_new().
6584 [Geoff Thorpe, suggested by Ulf Möller]
6586 *) Support for inhibitAnyPolicy certificate extension.
6589 *) An audit of the BIGNUM code is underway, for which debugging code is
6590 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6591 is considered valid when processing BIGNUMs, and causes execution to
6592 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6593 further steps are taken to deliberately pollute unused data in BIGNUM
6594 structures to try and expose faulty code further on. For now, openssl will
6595 (in its default mode of operation) continue to tolerate the inconsistent
6596 forms that it has tolerated in the past, but authors and packagers should
6597 consider trying openssl and their own applications when compiled with
6598 these debugging symbols defined. It will help highlight potential bugs in
6599 their own code, and will improve the test coverage for OpenSSL itself. At
6600 some point, these tighter rules will become openssl's default to improve
6601 maintainability, though the assert()s and other overheads will remain only
6602 in debugging configurations. See bn.h for more details.
6603 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6605 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6606 that can only be obtained through BN_CTX_new() (which implicitly
6607 initialises it). The presence of this function only made it possible
6608 to overwrite an existing structure (and cause memory leaks).
6611 *) Because of the callback-based approach for implementing LHASH as a
6612 template type, lh_insert() adds opaque objects to hash-tables and
6613 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6614 to clean up those corresponding objects before destroying the hash table
6615 (and losing the object pointers). So some over-zealous constifications in
6616 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6617 objects as "const" and the lh_doall[_arg] callback wrappers are not
6618 prototyped to have "const" restrictions on the object pointers they are
6619 given (and so aren't required to cast them away any more).
6622 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6623 (speed) prefers to use its own implementation. The two implementations
6624 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6625 its object type properly exposed (MS_TM) instead of casting to/from "char
6626 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6627 aren't necessarily the greatest nomenclatures - but this is what was used
6628 internally to the implementation so I've used that for now.
6631 *) Ensure that deprecated functions do not get compiled when
6632 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6633 the self-tests were still using deprecated key-generation functions so
6634 these have been updated also.
6637 *) Reorganise PKCS#7 code to separate the digest location functionality
6638 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6639 New function PKCS7_set_digest() to set the digest type for PKCS#7
6640 digestedData type. Add additional code to correctly generate the
6641 digestedData type and add support for this type in PKCS7 initialization
6645 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6646 structure of type "other".
6649 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6650 sure the loop does correctly stop and breaking ("division by zero")
6651 modulus operations are not performed. The (pre-generated) prime
6652 table crypto/bn/bn_prime.h was already correct, but it could not be
6653 re-generated on some platforms because of the "division by zero"
6654 situation in the script.
6655 [Ralf S. Engelschall]
6657 *) Update support for ECC-based TLS ciphersuites according to
6658 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6659 SHA-1 now is only used for "small" curves (where the
6660 representation of a field element takes up to 24 bytes); for
6661 larger curves, the field element resulting from ECDH is directly
6662 used as premaster secret.
6663 [Douglas Stebila (Sun Microsystems Laboratories)]
6665 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6666 curve secp160r1 to the tests.
6667 [Douglas Stebila (Sun Microsystems Laboratories)]
6669 *) Add the possibility to load symbols globally with DSO.
6670 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6672 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6673 control of the error stack.
6676 *) Add support for STORE in ENGINE.
6679 *) Add the STORE type. The intention is to provide a common interface
6680 to certificate and key stores, be they simple file-based stores, or
6681 HSM-type store, or LDAP stores, or...
6682 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6685 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6686 pass a list of arguments to any function as well as provide a way
6687 for a function to pass data back to the caller.
6690 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6691 works like BUF_strdup() but can be used to duplicate a portion of
6692 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6696 *) Add the function sk_find_ex() which works like sk_find(), but will
6697 return an index to an element even if an exact match couldn't be
6698 found. The index is guaranteed to point at the element where the
6699 searched-for key would be inserted to preserve sorting order.
6702 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6703 takes an extra flags argument for optional functionality. Currently,
6704 the following flags are defined:
6706 OBJ_BSEARCH_VALUE_ON_NOMATCH
6707 This one gets OBJ_bsearch_ex() to return a pointer to the first
6708 element where the comparing function returns a negative or zero
6711 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6712 This one gets OBJ_bsearch_ex() to return a pointer to the first
6713 element where the comparing function returns zero. This is useful
6714 if there are more than one element where the comparing function
6718 *) Make it possible to create self-signed certificates with 'openssl ca'
6719 in such a way that the self-signed certificate becomes part of the
6720 CA database and uses the same mechanisms for serial number generation
6721 as all other certificate signing. The new flag '-selfsign' enables
6722 this functionality. Adapt CA.sh and CA.pl.in.
6725 *) Add functionality to check the public key of a certificate request
6726 against a given private. This is useful to check that a certificate
6727 request can be signed by that key (self-signing).
6730 *) Make it possible to have multiple active certificates with the same
6731 subject in the CA index file. This is done only if the keyword
6732 'unique_subject' is set to 'no' in the main CA section (default
6733 if 'CA_default') of the configuration file. The value is saved
6734 with the database itself in a separate index attribute file,
6735 named like the index file with '.attr' appended to the name.
6738 *) Generate multi-valued AVAs using '+' notation in config files for
6742 *) Support for nameConstraints certificate extension.
6745 *) Support for policyConstraints certificate extension.
6748 *) Support for policyMappings certificate extension.
6751 *) Make sure the default DSA_METHOD implementation only uses its
6752 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6753 and change its own handlers to be NULL so as to remove unnecessary
6754 indirection. This lets alternative implementations fallback to the
6755 default implementation more easily.
6758 *) Support for directoryName in GeneralName related extensions
6762 *) Make it possible to link applications using Makefile.shared.
6763 Make that possible even when linking against static libraries!
6766 *) Support for single pass processing for S/MIME signing. This now
6767 means that S/MIME signing can be done from a pipe, in addition
6768 cleartext signing (multipart/signed type) is effectively streaming
6769 and the signed data does not need to be all held in memory.
6771 This is done with a new flag PKCS7_STREAM. When this flag is set
6772 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6773 is done after the data is output (and digests calculated) in
6774 SMIME_write_PKCS7().
6777 *) Add full support for -rpath/-R, both in shared libraries and
6778 applications, at least on the platforms where it's known how
6782 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6783 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6784 will now compute a table of multiples of the generator that
6785 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6786 faster (notably in the case of a single point multiplication,
6787 scalar * generator).
6788 [Nils Larsch, Bodo Moeller]
6790 *) IPv6 support for certificate extensions. The various extensions
6791 which use the IP:a.b.c.d can now take IPv6 addresses using the
6792 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6796 *) Added an ENGINE that implements RSA by performing private key
6797 exponentiations with the GMP library. The conversions to and from
6798 GMP's mpz_t format aren't optimised nor are any montgomery forms
6799 cached, and on x86 it appears OpenSSL's own performance has caught up.
6800 However there are likely to be other architectures where GMP could
6801 provide a boost. This ENGINE is not built in by default, but it can be
6802 specified at Configure time and should be accompanied by the necessary
6803 linker additions, eg;
6804 ./config -DOPENSSL_USE_GMP -lgmp
6807 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6808 testing availability of engines with "-t" - the old behaviour is
6809 produced by increasing the feature's verbosity with "-tt".
6812 *) ECDSA routines: under certain error conditions uninitialized BN objects
6813 could be freed. Solution: make sure initialization is performed early
6814 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6818 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6819 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6820 software implementations. For DSA and DH, parameter generation can
6821 also be overridden by providing the appropriate method callbacks.
6824 *) Change the "progress" mechanism used in key-generation and
6825 primality testing to functions that take a new BN_GENCB pointer in
6826 place of callback/argument pairs. The new API functions have "_ex"
6827 postfixes and the older functions are reimplemented as wrappers for
6828 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6829 declarations of the old functions to help (graceful) attempts to
6830 migrate to the new functions. Also, the new key-generation API
6831 functions operate on a caller-supplied key-structure and return
6832 success/failure rather than returning a key or NULL - this is to
6833 help make "keygen" another member function of RSA_METHOD etc.
6835 Example for using the new callback interface:
6837 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6841 BN_GENCB_set(&my_cb, my_callback, my_arg);
6843 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6844 /* For the meaning of a, b in calls to my_callback(), see the
6845 * documentation of the function that calls the callback.
6846 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6847 * my_callback should return 1 if it wants BN_is_prime_ex()
6848 * to continue, or 0 to stop.
6853 *) Change the ZLIB compression method to be stateful, and make it
6854 available to TLS with the number defined in
6855 draft-ietf-tls-compression-04.txt.
6858 *) Add the ASN.1 structures and functions for CertificatePair, which
6859 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6861 CertificatePair ::= SEQUENCE {
6862 forward [0] Certificate OPTIONAL,
6863 reverse [1] Certificate OPTIONAL,
6864 -- at least one of the pair shall be present -- }
6866 Also implement the PEM functions to read and write certificate
6867 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6869 This needed to be defined, mostly for the sake of the LDAP
6870 attribute crossCertificatePair, but may prove useful elsewhere as
6874 *) Make it possible to inhibit symlinking of shared libraries in
6875 Makefile.shared, for Cygwin's sake.
6878 *) Extend the BIGNUM API by creating a function
6879 void BN_set_negative(BIGNUM *a, int neg);
6880 and a macro that behave like
6881 int BN_is_negative(const BIGNUM *a);
6883 to avoid the need to access 'a->neg' directly in applications.
6886 *) Implement fast modular reduction for pseudo-Mersenne primes
6887 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6888 EC_GROUP_new_curve_GFp() will now automatically use this
6890 [Nils Larsch <nla@trustcenter.de>]
6892 *) Add new lock type (CRYPTO_LOCK_BN).
6895 *) Change the ENGINE framework to automatically load engines
6896 dynamically from specific directories unless they could be
6897 found to already be built in or loaded. Move all the
6898 current engines except for the cryptodev one to a new
6900 The engines in engines/ are built as shared libraries if
6901 the "shared" options was given to ./Configure or ./config.
6902 Otherwise, they are inserted in libcrypto.a.
6903 /usr/local/ssl/engines is the default directory for dynamic
6904 engines, but that can be overridden at configure time through
6905 the usual use of --prefix and/or --openssldir, and at run
6906 time with the environment variable OPENSSL_ENGINES.
6907 [Geoff Thorpe and Richard Levitte]
6909 *) Add Makefile.shared, a helper makefile to build shared
6910 libraries. Adapt Makefile.org.
6913 *) Add version info to Win32 DLLs.
6914 [Peter 'Luna' Runestig" <peter@runestig.com>]
6916 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6917 can be added using this API to created arbitrary PKCS#12
6918 files while avoiding the low level API.
6920 New options to PKCS12_create(), key or cert can be NULL and
6921 will then be omitted from the output file. The encryption
6922 algorithm NIDs can be set to -1 for no encryption, the mac
6923 iteration count can be set to 0 to omit the mac.
6925 Enhance pkcs12 utility by making the -nokeys and -nocerts
6926 options work when creating a PKCS#12 file. New option -nomac
6927 to omit the mac, NONE can be set for an encryption algorithm.
6928 New code is modified to use the enhanced PKCS12_create()
6929 instead of the low level API.
6932 *) Extend ASN1 encoder to support indefinite length constructed
6933 encoding. This can output sequences tags and octet strings in
6934 this form. Modify pk7_asn1.c to support indefinite length
6935 encoding. This is experimental and needs additional code to
6936 be useful, such as an ASN1 bio and some enhanced streaming
6939 Extend template encode functionality so that tagging is passed
6940 down to the template encoder.
6943 *) Let 'openssl req' fail if an argument to '-newkey' is not
6944 recognized instead of using RSA as a default.
6947 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6948 As these are not official, they are not included in "ALL";
6949 the "ECCdraft" ciphersuite group alias can be used to select them.
6950 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6952 *) Add ECDH engine support.
6953 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6955 *) Add ECDH in new directory crypto/ecdh/.
6956 [Douglas Stebila (Sun Microsystems Laboratories)]
6958 *) Let BN_rand_range() abort with an error after 100 iterations
6959 without success (which indicates a broken PRNG).
6962 *) Change BN_mod_sqrt() so that it verifies that the input value
6963 is really the square of the return value. (Previously,
6964 BN_mod_sqrt would show GIGO behaviour.)
6967 *) Add named elliptic curves over binary fields from X9.62, SECG,
6968 and WAP/WTLS; add OIDs that were still missing.
6970 [Sheueling Chang Shantz and Douglas Stebila
6971 (Sun Microsystems Laboratories)]
6973 *) Extend the EC library for elliptic curves over binary fields
6974 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6977 EC_GF2m_simple_method
6981 EC_GROUP_new_curve_GF2m
6982 EC_GROUP_set_curve_GF2m
6983 EC_GROUP_get_curve_GF2m
6984 EC_POINT_set_affine_coordinates_GF2m
6985 EC_POINT_get_affine_coordinates_GF2m
6986 EC_POINT_set_compressed_coordinates_GF2m
6988 Point compression for binary fields is disabled by default for
6989 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6992 As binary polynomials are represented as BIGNUMs, various members
6993 of the EC_GROUP and EC_POINT data structures can be shared
6994 between the implementations for prime fields and binary fields;
6995 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6996 are essentially identical to their ..._GFp counterparts.
6997 (For simplicity, the '..._GFp' prefix has been dropped from
6998 various internal method names.)
7000 An internal 'field_div' method (similar to 'field_mul' and
7001 'field_sqr') has been added; this is used only for binary fields.
7003 [Sheueling Chang Shantz and Douglas Stebila
7004 (Sun Microsystems Laboratories)]
7006 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
7007 through methods ('mul', 'precompute_mult').
7009 The generic implementations (now internally called 'ec_wNAF_mul'
7010 and 'ec_wNAF_precomputed_mult') remain the default if these
7011 methods are undefined.
7013 [Sheueling Chang Shantz and Douglas Stebila
7014 (Sun Microsystems Laboratories)]
7016 *) New function EC_GROUP_get_degree, which is defined through
7017 EC_METHOD. For curves over prime fields, this returns the bit
7018 length of the modulus.
7020 [Sheueling Chang Shantz and Douglas Stebila
7021 (Sun Microsystems Laboratories)]
7023 *) New functions EC_GROUP_dup, EC_POINT_dup.
7024 (These simply call ..._new and ..._copy).
7026 [Sheueling Chang Shantz and Douglas Stebila
7027 (Sun Microsystems Laboratories)]
7029 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
7030 Polynomials are represented as BIGNUMs (where the sign bit is not
7031 used) in the following functions [macros]:
7034 BN_GF2m_sub [= BN_GF2m_add]
7035 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
7036 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
7037 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
7039 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
7040 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
7041 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
7042 BN_GF2m_cmp [= BN_ucmp]
7044 (Note that only the 'mod' functions are actually for fields GF(2^m).
7045 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
7047 For some functions, an the irreducible polynomial defining a
7048 field can be given as an 'unsigned int[]' with strictly
7049 decreasing elements giving the indices of those bits that are set;
7050 i.e., p[] represents the polynomial
7051 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
7053 p[0] > p[1] > ... > p[k] = 0.
7054 This applies to the following functions:
7059 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
7060 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
7062 BN_GF2m_mod_sqrt_arr
7063 BN_GF2m_mod_solve_quad_arr
7067 Conversion can be performed by the following functions:
7072 bntest.c has additional tests for binary polynomial arithmetic.
7074 Two implementations for BN_GF2m_mod_div() are available.
7075 The default algorithm simply uses BN_GF2m_mod_inv() and
7076 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
7077 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
7078 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
7080 [Sheueling Chang Shantz and Douglas Stebila
7081 (Sun Microsystems Laboratories)]
7083 *) Add new error code 'ERR_R_DISABLED' that can be used when some
7084 functionality is disabled at compile-time.
7085 [Douglas Stebila <douglas.stebila@sun.com>]
7087 *) Change default behaviour of 'openssl asn1parse' so that more
7088 information is visible when viewing, e.g., a certificate:
7090 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
7091 mode the content of non-printable OCTET STRINGs is output in a
7092 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
7093 avoid the appearance of a printable string.
7094 [Nils Larsch <nla@trustcenter.de>]
7096 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
7098 EC_GROUP_set_asn1_flag()
7099 EC_GROUP_get_asn1_flag()
7100 EC_GROUP_set_point_conversion_form()
7101 EC_GROUP_get_point_conversion_form()
7102 These control ASN1 encoding details:
7103 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
7104 has been set to OPENSSL_EC_NAMED_CURVE.
7105 - Points are encoded in uncompressed form by default; options for
7106 asn1_for are as for point2oct, namely
7107 POINT_CONVERSION_COMPRESSED
7108 POINT_CONVERSION_UNCOMPRESSED
7109 POINT_CONVERSION_HYBRID
7111 Also add 'seed' and 'seed_len' members to EC_GROUP with access
7114 EC_GROUP_get0_seed()
7115 EC_GROUP_get_seed_len()
7116 This is used only for ASN1 purposes (so far).
7117 [Nils Larsch <nla@trustcenter.de>]
7119 *) Add 'field_type' member to EC_METHOD, which holds the NID
7120 of the appropriate field type OID. The new function
7121 EC_METHOD_get_field_type() returns this value.
7122 [Nils Larsch <nla@trustcenter.de>]
7127 EC_POINT_point2hex()
7128 EC_POINT_hex2point()
7129 providing useful interfaces to EC_POINT_point2oct() and
7130 EC_POINT_oct2point().
7131 [Nils Larsch <nla@trustcenter.de>]
7133 *) Change internals of the EC library so that the functions
7134 EC_GROUP_set_generator()
7135 EC_GROUP_get_generator()
7136 EC_GROUP_get_order()
7137 EC_GROUP_get_cofactor()
7138 are implemented directly in crypto/ec/ec_lib.c and not dispatched
7139 to methods, which would lead to unnecessary code duplication when
7140 adding different types of curves.
7141 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
7143 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
7144 arithmetic, and such that modified wNAFs are generated
7145 (which avoid length expansion in many cases).
7148 *) Add a function EC_GROUP_check_discriminant() (defined via
7149 EC_METHOD) that verifies that the curve discriminant is non-zero.
7151 Add a function EC_GROUP_check() that makes some sanity tests
7152 on a EC_GROUP, its generator and order. This includes
7153 EC_GROUP_check_discriminant().
7154 [Nils Larsch <nla@trustcenter.de>]
7156 *) Add ECDSA in new directory crypto/ecdsa/.
7158 Add applications 'openssl ecparam' and 'openssl ecdsa'
7159 (these are based on 'openssl dsaparam' and 'openssl dsa').
7161 ECDSA support is also included in various other files across the
7162 library. Most notably,
7163 - 'openssl req' now has a '-newkey ecdsa:file' option;
7164 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
7165 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
7166 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
7167 them suitable for ECDSA where domain parameters must be
7168 extracted before the specific public key;
7169 - ECDSA engine support has been added.
7170 [Nils Larsch <nla@trustcenter.de>]
7172 *) Include some named elliptic curves, and add OIDs from X9.62,
7173 SECG, and WAP/WTLS. Each curve can be obtained from the new
7175 EC_GROUP_new_by_curve_name(),
7176 and the list of available named curves can be obtained with
7177 EC_get_builtin_curves().
7178 Also add a 'curve_name' member to EC_GROUP objects, which can be
7180 EC_GROUP_set_curve_name()
7181 EC_GROUP_get_curve_name()
7182 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
7184 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
7185 was actually never needed) and in BN_mul(). The removal in BN_mul()
7186 required a small change in bn_mul_part_recursive() and the addition
7187 of the functions bn_cmp_part_words(), bn_sub_part_words() and
7188 bn_add_part_words(), which do the same thing as bn_cmp_words(),
7189 bn_sub_words() and bn_add_words() except they take arrays with
7193 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
7195 *) Cleanse PEM buffers before freeing them since they may contain
7197 [Benjamin Bennett <ben@psc.edu>]
7199 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
7200 a ciphersuite string such as "DEFAULT:RSA" cannot enable
7201 authentication-only ciphersuites.
7204 *) Since AES128 and AES256 share a single mask bit in the logic of
7205 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
7206 kludge to work properly if AES128 is available and AES256 isn't.
7209 *) Expand security boundary to match 1.1.1 module.
7212 *) Remove redundant features: hash file source, editing of test vectors
7213 modify fipsld to use external fips_premain.c signature.
7216 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
7217 run algorithm test programs.
7220 *) Make algorithm test programs more tolerant of whitespace.
7223 *) Have SSL/TLS server implementation tolerate "mismatched" record
7224 protocol version while receiving ClientHello even if the
7225 ClientHello is fragmented. (The server can't insist on the
7226 particular protocol version it has chosen before the ServerHello
7227 message has informed the client about his choice.)
7230 *) Load error codes if they are not already present instead of using a
7231 static variable. This allows them to be cleanly unloaded and reloaded.
7234 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
7236 *) Introduce limits to prevent malicious keys being able to
7237 cause a denial of service. (CVE-2006-2940)
7238 [Steve Henson, Bodo Moeller]
7240 *) Fix ASN.1 parsing of certain invalid structures that can result
7241 in a denial of service. (CVE-2006-2937) [Steve Henson]
7243 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
7244 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
7246 *) Fix SSL client code which could crash if connecting to a
7247 malicious SSLv2 server. (CVE-2006-4343)
7248 [Tavis Ormandy and Will Drewry, Google Security Team]
7250 *) Change ciphersuite string processing so that an explicit
7251 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
7252 will no longer include "AES128-SHA"), and any other similar
7253 ciphersuite (same bitmap) from *other* protocol versions (so that
7254 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
7255 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
7256 changes from 0.9.8b and 0.9.8d.
7259 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
7261 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
7262 (CVE-2006-4339) [Ben Laurie and Google Security Team]
7264 *) Change the Unix randomness entropy gathering to use poll() when
7265 possible instead of select(), since the latter has some
7266 undesirable limitations.
7267 [Darryl Miles via Richard Levitte and Bodo Moeller]
7269 *) Disable rogue ciphersuites:
7271 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
7272 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
7273 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
7275 The latter two were purportedly from
7276 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
7279 Also deactivate the remaining ciphersuites from
7280 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
7281 unofficial, and the ID has long expired.
7284 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
7285 dual-core machines) and other potential thread-safety issues.
7288 Changes between 0.9.7i and 0.9.7j [04 May 2006]
7290 *) Adapt fipsld and the build system to link against the validated FIPS
7291 module in FIPS mode.
7294 *) Fixes for VC++ 2005 build under Windows.
7297 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
7298 from a Windows bash shell such as MSYS. It is autodetected from the
7299 "config" script when run from a VC++ environment. Modify standard VC++
7300 build to use fipscanister.o from the GNU make build.
7303 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
7305 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
7306 The value now differs depending on if you build for FIPS or not.
7307 BEWARE! A program linked with a shared FIPSed libcrypto can't be
7308 safely run with a non-FIPSed libcrypto, as it may crash because of
7309 the difference induced by this change.
7312 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
7314 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
7315 (part of SSL_OP_ALL). This option used to disable the
7316 countermeasure against man-in-the-middle protocol-version
7317 rollback in the SSL 2.0 server implementation, which is a bad
7318 idea. (CVE-2005-2969)
7320 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
7321 for Information Security, National Institute of Advanced Industrial
7322 Science and Technology [AIST], Japan)]
7324 *) Minimal support for X9.31 signatures and PSS padding modes. This is
7325 mainly for FIPS compliance and not fully integrated at this stage.
7328 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
7329 the exponentiation using a fixed-length exponent. (Otherwise,
7330 the information leaked through timing could expose the secret key
7331 after many signatures; cf. Bleichenbacher's attack on DSA with
7335 *) Make a new fixed-window mod_exp implementation the default for
7336 RSA, DSA, and DH private-key operations so that the sequence of
7337 squares and multiplies and the memory access pattern are
7338 independent of the particular secret key. This will mitigate
7339 cache-timing and potential related attacks.
7341 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
7342 and this is automatically used by BN_mod_exp_mont() if the new flag
7343 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
7344 will use this BN flag for private exponents unless the flag
7345 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
7346 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
7348 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
7350 *) Change the client implementation for SSLv23_method() and
7351 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
7352 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
7353 (Previously, the SSL 2.0 backwards compatible Client Hello
7354 message format would be used even with SSL_OP_NO_SSLv2.)
7357 *) Add support for smime-type MIME parameter in S/MIME messages which some
7361 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
7362 a threadsafe manner. Modify rsa code to use new function and add calls
7363 to dsa and dh code (which had race conditions before).
7366 *) Include the fixed error library code in the C error file definitions
7367 instead of fixing them up at runtime. This keeps the error code
7368 structures constant.
7371 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
7373 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
7376 *) Fixes for newer kerberos headers. NB: the casts are needed because
7377 the 'length' field is signed on one version and unsigned on another
7378 with no (?) obvious way to tell the difference, without these VC++
7379 complains. Also the "definition" of FAR (blank) is no longer included
7380 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
7381 some needed definitions.
7384 *) Undo Cygwin change.
7387 *) Added support for proxy certificates according to RFC 3820.
7388 Because they may be a security thread to unaware applications,
7389 they must be explicitly allowed in run-time. See
7390 docs/HOWTO/proxy_certificates.txt for further information.
7393 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
7395 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
7396 server and client random values. Previously
7397 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
7398 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
7400 This change has negligible security impact because:
7402 1. Server and client random values still have 24 bytes of pseudo random
7405 2. Server and client random values are sent in the clear in the initial
7408 3. The master secret is derived using the premaster secret (48 bytes in
7409 size for static RSA ciphersuites) as well as client server and random
7412 The OpenSSL team would like to thank the UK NISCC for bringing this issue
7415 [Stephen Henson, reported by UK NISCC]
7417 *) Use Windows randomness collection on Cygwin.
7420 *) Fix hang in EGD/PRNGD query when communication socket is closed
7421 prematurely by EGD/PRNGD.
7422 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
7424 *) Prompt for pass phrases when appropriate for PKCS12 input format.
7427 *) Back-port of selected performance improvements from development
7428 branch, as well as improved support for PowerPC platforms.
7431 *) Add lots of checks for memory allocation failure, error codes to indicate
7432 failure and freeing up memory if a failure occurs.
7433 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
7435 *) Add new -passin argument to dgst.
7438 *) Perform some character comparisons of different types in X509_NAME_cmp:
7439 this is needed for some certificates that re-encode DNs into UTF8Strings
7440 (in violation of RFC3280) and can't or won't issue name rollover
7444 *) Make an explicit check during certificate validation to see that
7445 the CA setting in each certificate on the chain is correct. As a
7446 side effect always do the following basic checks on extensions,
7447 not just when there's an associated purpose to the check:
7449 - if there is an unhandled critical extension (unless the user
7450 has chosen to ignore this fault)
7451 - if the path length has been exceeded (if one is set at all)
7452 - that certain extensions fit the associated purpose (if one has
7456 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
7458 *) Avoid a race condition when CRLs are checked in a multi threaded
7459 environment. This would happen due to the reordering of the revoked
7460 entries during signature checking and serial number lookup. Now the
7461 encoding is cached and the serial number sort performed under a lock.
7462 Add new STACK function sk_is_sorted().
7465 *) Add Delta CRL to the extension code.
7468 *) Various fixes to s3_pkt.c so alerts are sent properly.
7469 [David Holmes <d.holmes@f5.com>]
7471 *) Reduce the chances of duplicate issuer name and serial numbers (in
7472 violation of RFC3280) using the OpenSSL certificate creation utilities.
7473 This is done by creating a random 64 bit value for the initial serial
7474 number when a serial number file is created or when a self signed
7475 certificate is created using 'openssl req -x509'. The initial serial
7476 number file is created using 'openssl x509 -next_serial' in CA.pl
7477 rather than being initialized to 1.
7480 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
7482 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7483 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7484 [Joe Orton, Steve Henson]
7486 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7488 [Joe Orton, Steve Henson]
7490 *) Make it possible to have multiple active certificates with the same
7491 subject in the CA index file. This is done only if the keyword
7492 'unique_subject' is set to 'no' in the main CA section (default
7493 if 'CA_default') of the configuration file. The value is saved
7494 with the database itself in a separate index attribute file,
7495 named like the index file with '.attr' appended to the name.
7498 *) X509 verify fixes. Disable broken certificate workarounds when
7499 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7500 keyUsage extension present. Don't accept CRLs with unhandled critical
7501 extensions: since verify currently doesn't process CRL extensions this
7502 rejects a CRL with *any* critical extensions. Add new verify error codes
7506 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7507 A clarification of RFC2560 will require the use of OCTET STRINGs and
7508 some implementations cannot handle the current raw format. Since OpenSSL
7509 copies and compares OCSP nonces as opaque blobs without any attempt at
7510 parsing them this should not create any compatibility issues.
7513 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7514 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7515 this HMAC (and other) operations are several times slower than OpenSSL
7519 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7520 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7522 *) Use the correct content when signing type "other".
7525 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7527 *) Fix various bugs revealed by running the NISCC test suite:
7529 Stop out of bounds reads in the ASN1 code when presented with
7530 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7532 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7534 If verify callback ignores invalid public key errors don't try to check
7535 certificate signature with the NULL public key.
7539 *) New -ignore_err option in ocsp application to stop the server
7540 exiting on the first error in a request.
7543 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7544 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7548 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7549 extra data after the compression methods not only for TLS 1.0
7550 but also for SSL 3.0 (as required by the specification).
7551 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7553 *) Change X509_certificate_type() to mark the key as exported/exportable
7554 when it's 512 *bits* long, not 512 bytes.
7557 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7558 blocks during encryption.
7561 *) Various fixes to base64 BIO and non blocking I/O. On write
7562 flushes were not handled properly if the BIO retried. On read
7563 data was not being buffered properly and had various logic bugs.
7564 This also affects blocking I/O when the data being decoded is a
7568 *) Various S/MIME bugfixes and compatibility changes:
7569 output correct application/pkcs7 MIME type if
7570 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7571 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7572 of files as .eml work). Correctly handle very long lines in MIME
7576 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7578 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7579 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7580 a protocol version number mismatch like a decryption error
7581 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7584 *) Turn on RSA blinding by default in the default implementation
7585 to avoid a timing attack. Applications that don't want it can call
7586 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7587 They would be ill-advised to do so in most cases.
7588 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7590 *) Change RSA blinding code so that it works when the PRNG is not
7591 seeded (in this case, the secret RSA exponent is abused as
7592 an unpredictable seed -- if it is not unpredictable, there
7593 is no point in blinding anyway). Make RSA blinding thread-safe
7594 by remembering the creator's thread ID in rsa->blinding and
7595 having all other threads use local one-time blinding factors
7596 (this requires more computation than sharing rsa->blinding, but
7597 avoids excessive locking; and if an RSA object is not shared
7598 between threads, blinding will still be very fast).
7601 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7602 ENGINE as defaults for all supported algorithms irrespective of
7603 the 'flags' parameter. 'flags' is now honoured, so applications
7604 should make sure they are passing it correctly.
7607 *) Target "mingw" now allows native Windows code to be generated in
7608 the Cygwin environment as well as with the MinGW compiler.
7611 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7613 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7614 via timing by performing a MAC computation even if incorrect
7615 block cipher padding has been found. This is a countermeasure
7616 against active attacks where the attacker has to distinguish
7617 between bad padding and a MAC verification error. (CVE-2003-0078)
7619 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7620 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7621 Martin Vuagnoux (EPFL, Ilion)]
7623 *) Make the no-err option work as intended. The intention with no-err
7624 is not to have the whole error stack handling routines removed from
7625 libcrypto, it's only intended to remove all the function name and
7626 reason texts, thereby removing some of the footprint that may not
7627 be interesting if those errors aren't displayed anyway.
7629 NOTE: it's still possible for any application or module to have its
7630 own set of error texts inserted. The routines are there, just not
7631 used by default when no-err is given.
7634 *) Add support for FreeBSD on IA64.
7635 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7637 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7638 Kerberos function mit_des_cbc_cksum(). Before this change,
7639 the value returned by DES_cbc_cksum() was like the one from
7640 mit_des_cbc_cksum(), except the bytes were swapped.
7641 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7643 *) Allow an application to disable the automatic SSL chain building.
7644 Before this a rather primitive chain build was always performed in
7645 ssl3_output_cert_chain(): an application had no way to send the
7646 correct chain if the automatic operation produced an incorrect result.
7648 Now the chain builder is disabled if either:
7650 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7652 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7654 The reasoning behind this is that an application would not want the
7655 auto chain building to take place if extra chain certificates are
7656 present and it might also want a means of sending no additional
7657 certificates (for example the chain has two certificates and the
7661 *) Add the possibility to build without the ENGINE framework.
7662 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7664 *) Under Win32 gmtime() can return NULL: check return value in
7665 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7668 *) DSA routines: under certain error conditions uninitialized BN objects
7669 could be freed. Solution: make sure initialization is performed early
7670 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7671 Nils Larsch <nla@trustcenter.de> via PR#459)
7674 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7675 checked on reconnect on the client side, therefore session resumption
7676 could still fail with a "ssl session id is different" error. This
7677 behaviour is masked when SSL_OP_ALL is used due to
7678 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7679 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7680 followup to PR #377.
7683 *) IA-32 assembler support enhancements: unified ELF targets, support
7684 for SCO/Caldera platforms, fix for Cygwin shared build.
7687 *) Add support for FreeBSD on sparc64. As a consequence, support for
7688 FreeBSD on non-x86 processors is separate from x86 processors on
7689 the config script, much like the NetBSD support.
7690 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7692 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7694 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7697 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7698 code (06) was taken as the first octet of the session ID and the last
7699 octet was ignored consequently. As a result SSLv2 client side session
7700 caching could not have worked due to the session ID mismatch between
7702 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7706 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7707 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7711 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7712 seems that in spite of existing for more than a year, many application
7713 author have done nothing to provide the necessary callbacks, which
7714 means that this particular engine will not work properly anywhere.
7715 This is a very unfortunate situation which forces us, in the name
7716 of usability, to give the hw_ncipher.c a static lock, which is part
7718 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7719 appear in 0.9.8 or later. We EXPECT application authors to have
7720 dealt properly with this when 0.9.8 is released (unless we actually
7721 make such changes in the libcrypto locking code that changes will
7722 have to be made anyway).
7725 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7726 octets have been read, EOF or an error occurs. Without this change
7727 some truncated ASN1 structures will not produce an error.
7730 *) Disable Heimdal support, since it hasn't been fully implemented.
7731 Still give the possibility to force the use of Heimdal, but with
7732 warnings and a request that patches get sent to openssl-dev.
7735 *) Add the VC-CE target, introduce the WINCE sysname, and add
7736 INSTALL.WCE and appropriate conditionals to make it build.
7737 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7739 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7740 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7741 edit numbers of the version.
7742 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7744 *) Introduce safe string copy and catenation functions
7745 (BUF_strlcpy() and BUF_strlcat()).
7746 [Ben Laurie (CHATS) and Richard Levitte]
7748 *) Avoid using fixed-size buffers for one-line DNs.
7749 [Ben Laurie (CHATS)]
7751 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7752 resizing buffers containing secrets, and use where appropriate.
7753 [Ben Laurie (CHATS)]
7755 *) Avoid using fixed size buffers for configuration file location.
7756 [Ben Laurie (CHATS)]
7758 *) Avoid filename truncation for various CA files.
7759 [Ben Laurie (CHATS)]
7761 *) Use sizeof in preference to magic numbers.
7762 [Ben Laurie (CHATS)]
7764 *) Avoid filename truncation in cert requests.
7765 [Ben Laurie (CHATS)]
7767 *) Add assertions to check for (supposedly impossible) buffer
7769 [Ben Laurie (CHATS)]
7771 *) Don't cache truncated DNS entries in the local cache (this could
7772 potentially lead to a spoofing attack).
7773 [Ben Laurie (CHATS)]
7775 *) Fix various buffers to be large enough for hex/decimal
7776 representations in a platform independent manner.
7777 [Ben Laurie (CHATS)]
7779 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7780 resizing buffers containing secrets, and use where appropriate.
7781 [Ben Laurie (CHATS)]
7783 *) Add BIO_indent() to avoid much slightly worrying code to do
7785 [Ben Laurie (CHATS)]
7787 *) Convert sprintf()/BIO_puts() to BIO_printf().
7788 [Ben Laurie (CHATS)]
7790 *) buffer_gets() could terminate with the buffer only half
7792 [Ben Laurie (CHATS)]
7794 *) Add assertions to prevent user-supplied crypto functions from
7795 overflowing internal buffers by having large block sizes, etc.
7796 [Ben Laurie (CHATS)]
7798 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7800 [Ben Laurie (CHATS)]
7802 *) Eliminate unused copy of key in RC4.
7803 [Ben Laurie (CHATS)]
7805 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7806 [Ben Laurie (CHATS)]
7808 *) Fix off-by-one error in EGD path.
7809 [Ben Laurie (CHATS)]
7811 *) If RANDFILE path is too long, ignore instead of truncating.
7812 [Ben Laurie (CHATS)]
7814 *) Eliminate unused and incorrectly sized X.509 structure
7816 [Ben Laurie (CHATS)]
7818 *) Eliminate unused and dangerous function knumber().
7819 [Ben Laurie (CHATS)]
7821 *) Eliminate unused and dangerous structure, KSSL_ERR.
7822 [Ben Laurie (CHATS)]
7824 *) Protect against overlong session ID context length in an encoded
7825 session object. Since these are local, this does not appear to be
7827 [Ben Laurie (CHATS)]
7829 *) Change from security patch (see 0.9.6e below) that did not affect
7830 the 0.9.6 release series:
7832 Remote buffer overflow in SSL3 protocol - an attacker could
7833 supply an oversized master key in Kerberos-enabled versions.
7835 [Ben Laurie (CHATS)]
7837 *) Change the SSL kerb5 codes to match RFC 2712.
7840 *) Make -nameopt work fully for req and add -reqopt switch.
7841 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7843 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7844 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7846 *) Make sure tests can be performed even if the corresponding algorithms
7847 have been removed entirely. This was also the last step to make
7848 OpenSSL compilable with DJGPP under all reasonable conditions.
7849 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7851 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7852 to allow version independent disabling of normally unselected ciphers,
7853 which may be activated as a side-effect of selecting a single cipher.
7855 (E.g., cipher list string "RSA" enables ciphersuites that are left
7856 out of "ALL" because they do not provide symmetric encryption.
7857 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7858 [Lutz Jaenicke, Bodo Moeller]
7860 *) Add appropriate support for separate platform-dependent build
7861 directories. The recommended way to make a platform-dependent
7862 build directory is the following (tested on Linux), maybe with
7865 # Place yourself outside of the OpenSSL source tree. In
7866 # this example, the environment variable OPENSSL_SOURCE
7867 # is assumed to contain the absolute OpenSSL source directory.
7868 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7869 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7870 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7871 mkdir -p `dirname $F`
7872 ln -s $OPENSSL_SOURCE/$F $F
7875 To be absolutely sure not to disturb the source tree, a "make clean"
7876 is a good thing. If it isn't successful, don't worry about it,
7877 it probably means the source directory is very clean.
7880 *) Make sure any ENGINE control commands make local copies of string
7881 pointers passed to them whenever necessary. Otherwise it is possible
7882 the caller may have overwritten (or deallocated) the original string
7883 data when a later ENGINE operation tries to use the stored values.
7884 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7886 *) Improve diagnostics in file reading and command-line digests.
7887 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7889 *) Add AES modes CFB and OFB to the object database. Correct an
7890 error in AES-CFB decryption.
7893 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7894 allows existing EVP_CIPHER_CTX structures to be reused after
7895 calling EVP_*Final(). This behaviour is used by encryption
7896 BIOs and some applications. This has the side effect that
7897 applications must explicitly clean up cipher contexts with
7898 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7901 *) Check the values of dna and dnb in bn_mul_recursive before calling
7902 bn_mul_comba (a non zero value means the a or b arrays do not contain
7903 n2 elements) and fallback to bn_mul_normal if either is not zero.
7906 *) Fix escaping of non-ASCII characters when using the -subj option
7907 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7910 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7911 form for "surname", serialNumber has no short form.
7912 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7913 therefore remove "mail" short name for "internet 7".
7914 The OID for unique identifiers in X509 certificates is
7915 x500UniqueIdentifier, not uniqueIdentifier.
7916 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7919 *) Add an "init" command to the ENGINE config module and auto initialize
7920 ENGINEs. Without any "init" command the ENGINE will be initialized
7921 after all ctrl commands have been executed on it. If init=1 the
7922 ENGINE is initialized at that point (ctrls before that point are run
7923 on the uninitialized ENGINE and after on the initialized one). If
7924 init=0 then the ENGINE will not be initialized at all.
7927 *) Fix the 'app_verify_callback' interface so that the user-defined
7928 argument is actually passed to the callback: In the
7929 SSL_CTX_set_cert_verify_callback() prototype, the callback
7930 declaration has been changed from
7933 int (*cb)(X509_STORE_CTX *,void *);
7934 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7935 i=s->ctx->app_verify_callback(&ctx)
7936 has been changed into
7937 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7939 To update applications using SSL_CTX_set_cert_verify_callback(),
7940 a dummy argument can be added to their callback functions.
7941 [D. K. Smetters <smetters@parc.xerox.com>]
7943 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7944 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7946 *) Add and OPENSSL_LOAD_CONF define which will cause
7947 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7948 This allows older applications to transparently support certain
7949 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7950 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7951 load the config file and OPENSSL_add_all_algorithms_conf() which will
7952 always load it have also been added.
7955 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7956 Adjust NIDs and EVP layer.
7957 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7959 *) Config modules support in openssl utility.
7961 Most commands now load modules from the config file,
7962 though in a few (such as version) this isn't done
7963 because it couldn't be used for anything.
7965 In the case of ca and req the config file used is
7966 the same as the utility itself: that is the -config
7967 command line option can be used to specify an
7971 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7972 use "openssl_conf" if filename is NULL use default openssl config file.
7975 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7976 config section name. Add a new flag to tolerate a missing config file
7977 and move code to CONF_modules_load_file().
7980 *) Support for crypto accelerator cards from Accelerated Encryption
7981 Processing, www.aep.ie. (Use engine 'aep')
7982 The support was copied from 0.9.6c [engine] and adapted/corrected
7983 to work with the new engine framework.
7984 [AEP Inc. and Richard Levitte]
7986 *) Support for SureWare crypto accelerator cards from Baltimore
7987 Technologies. (Use engine 'sureware')
7988 The support was copied from 0.9.6c [engine] and adapted
7989 to work with the new engine framework.
7992 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7993 make the newer ENGINE framework commands for the CHIL engine work.
7994 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7996 *) Make it possible to produce shared libraries on ReliantUNIX.
7997 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7999 *) Add the configuration target debug-linux-ppro.
8000 Make 'openssl rsa' use the general key loading routines
8001 implemented in apps.c, and make those routines able to
8002 handle the key format FORMAT_NETSCAPE and the variant
8004 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
8006 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
8007 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
8009 *) Add -keyform to rsautl, and document -engine.
8010 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
8012 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
8013 BIO_R_NO_SUCH_FILE error code rather than the generic
8014 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
8017 *) Add new functions
8019 ERR_peek_last_error_line
8020 ERR_peek_last_error_line_data.
8021 These are similar to
8024 ERR_peek_error_line_data,
8025 but report on the latest error recorded rather than the first one
8026 still in the error queue.
8027 [Ben Laurie, Bodo Moeller]
8029 *) default_algorithms option in ENGINE config module. This allows things
8031 default_algorithms = ALL
8032 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
8035 *) Preliminary ENGINE config module.
8038 *) New experimental application configuration code.
8041 *) Change the AES code to follow the same name structure as all other
8042 symmetric ciphers, and behave the same way. Move everything to
8043 the directory crypto/aes, thereby obsoleting crypto/rijndael.
8044 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
8046 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
8047 [Ben Laurie and Theo de Raadt]
8049 *) Add option to output public keys in req command.
8050 [Massimiliano Pala madwolf@openca.org]
8052 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
8053 (up to about 10% better than before for P-192 and P-224).
8056 *) New functions/macros
8058 SSL_CTX_set_msg_callback(ctx, cb)
8059 SSL_CTX_set_msg_callback_arg(ctx, arg)
8060 SSL_set_msg_callback(ssl, cb)
8061 SSL_set_msg_callback_arg(ssl, arg)
8063 to request calling a callback function
8065 void cb(int write_p, int version, int content_type,
8066 const void *buf, size_t len, SSL *ssl, void *arg)
8068 whenever a protocol message has been completely received
8069 (write_p == 0) or sent (write_p == 1). Here 'version' is the
8070 protocol version according to which the SSL library interprets
8071 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
8072 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
8073 the content type as defined in the SSL 3.0/TLS 1.0 protocol
8074 specification (change_cipher_spec(20), alert(21), handshake(22)).
8075 'buf' and 'len' point to the actual message, 'ssl' to the
8076 SSL object, and 'arg' is the application-defined value set by
8077 SSL[_CTX]_set_msg_callback_arg().
8079 'openssl s_client' and 'openssl s_server' have new '-msg' options
8080 to enable a callback that displays all protocol messages.
8083 *) Change the shared library support so shared libraries are built as
8084 soon as the corresponding static library is finished, and thereby get
8085 openssl and the test programs linked against the shared library.
8086 This still only happens when the keyword "shard" has been given to
8087 the configuration scripts.
8089 NOTE: shared library support is still an experimental thing, and
8090 backward binary compatibility is still not guaranteed.
8091 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
8093 *) Add support for Subject Information Access extension.
8094 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
8096 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
8097 additional bytes when new memory had to be allocated, not just
8098 when reusing an existing buffer.
8101 *) New command line and configuration option 'utf8' for the req command.
8102 This allows field values to be specified as UTF8 strings.
8105 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
8106 runs for the former and machine-readable output for the latter.
8109 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
8110 of the e-mail address in the DN (i.e., it will go into a certificate
8111 extension only). The new configuration file option 'email_in_dn = no'
8112 has the same effect.
8113 [Massimiliano Pala madwolf@openca.org]
8115 *) Change all functions with names starting with des_ to be starting
8116 with DES_ instead. Add wrappers that are compatible with libdes,
8117 but are named _ossl_old_des_*. Finally, add macros that map the
8118 des_* symbols to the corresponding _ossl_old_des_* if libdes
8119 compatibility is desired. If OpenSSL 0.9.6c compatibility is
8120 desired, the des_* symbols will be mapped to DES_*, with one
8123 Since we provide two compatibility mappings, the user needs to
8124 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
8125 compatibility is desired. The default (i.e., when that macro
8126 isn't defined) is OpenSSL 0.9.6c compatibility.
8128 There are also macros that enable and disable the support of old
8129 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
8130 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
8131 are defined, the default will apply: to support the old des routines.
8133 In either case, one must include openssl/des.h to get the correct
8134 definitions. Do not try to just include openssl/des_old.h, that
8137 NOTE: This is a major break of an old API into a new one. Software
8138 authors are encouraged to switch to the DES_ style functions. Some
8139 time in the future, des_old.h and the libdes compatibility functions
8140 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
8141 default), and then completely removed.
8144 *) Test for certificates which contain unsupported critical extensions.
8145 If such a certificate is found during a verify operation it is
8146 rejected by default: this behaviour can be overridden by either
8147 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
8148 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
8149 X509_supported_extension() has also been added which returns 1 if a
8150 particular extension is supported.
8153 *) Modify the behaviour of EVP cipher functions in similar way to digests
8154 to retain compatibility with existing code.
8157 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
8158 compatibility with existing code. In particular the 'ctx' parameter does
8159 not have to be to be initialized before the call to EVP_DigestInit() and
8160 it is tidied up after a call to EVP_DigestFinal(). New function
8161 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
8162 EVP_MD_CTX_copy() changed to not require the destination to be
8163 initialized valid and new function EVP_MD_CTX_copy_ex() added which
8164 requires the destination to be valid.
8166 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
8167 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
8170 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
8171 so that complete 'Handshake' protocol structures are kept in memory
8172 instead of overwriting 'msg_type' and 'length' with 'body' data.
8175 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
8176 [Massimo Santin via Richard Levitte]
8178 *) Major restructuring to the underlying ENGINE code. This includes
8179 reduction of linker bloat, separation of pure "ENGINE" manipulation
8180 (initialisation, etc) from functionality dealing with implementations
8181 of specific crypto interfaces. This change also introduces integrated
8182 support for symmetric ciphers and digest implementations - so ENGINEs
8183 can now accelerate these by providing EVP_CIPHER and EVP_MD
8184 implementations of their own. This is detailed in crypto/engine/README
8185 as it couldn't be adequately described here. However, there are a few
8186 API changes worth noting - some RSA, DSA, DH, and RAND functions that
8187 were changed in the original introduction of ENGINE code have now
8188 reverted back - the hooking from this code to ENGINE is now a good
8189 deal more passive and at run-time, operations deal directly with
8190 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
8191 dereferencing through an ENGINE pointer any more. Also, the ENGINE
8192 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
8193 they were not being used by the framework as there is no concept of a
8194 BIGNUM_METHOD and they could not be generalised to the new
8195 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
8196 ENGINE_cpy() has been removed as it cannot be consistently defined in
8200 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
8203 *) Change mkdef.pl to sort symbols that get the same entry number,
8204 and make sure the automatically generated functions ERR_load_*
8205 become part of libeay.num as well.
8208 *) New function SSL_renegotiate_pending(). This returns true once
8209 renegotiation has been requested (either SSL_renegotiate() call
8210 or HelloRequest/ClientHello received from the peer) and becomes
8211 false once a handshake has been completed.
8212 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
8213 sends a HelloRequest, but does not ensure that a handshake takes
8214 place. SSL_renegotiate_pending() is useful for checking if the
8215 client has followed the request.)
8218 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
8219 By default, clients may request session resumption even during
8220 renegotiation (if session ID contexts permit); with this option,
8221 session resumption is possible only in the first handshake.
8223 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
8224 more bits available for options that should not be part of
8225 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
8228 *) Add some demos for certificate and certificate request creation.
8231 *) Make maximum certificate chain size accepted from the peer application
8232 settable (SSL*_get/set_max_cert_list()), as proposed by
8233 "Douglas E. Engert" <deengert@anl.gov>.
8236 *) Add support for shared libraries for Unixware-7
8237 (Boyd Lynn Gerber <gerberb@zenez.com>).
8240 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
8241 be done prior to destruction. Use this to unload error strings from
8242 ENGINEs that load their own error strings. NB: This adds two new API
8243 functions to "get" and "set" this destroy handler in an ENGINE.
8246 *) Alter all existing ENGINE implementations (except "openssl" and
8247 "openbsd") to dynamically instantiate their own error strings. This
8248 makes them more flexible to be built both as statically-linked ENGINEs
8249 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
8250 Also, add stub code to each that makes building them as self-contained
8251 shared-libraries easier (see README.ENGINE).
8254 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
8255 implementations into applications that are completely implemented in
8256 self-contained shared-libraries. The "dynamic" ENGINE exposes control
8257 commands that can be used to configure what shared-library to load and
8258 to control aspects of the way it is handled. Also, made an update to
8259 the README.ENGINE file that brings its information up-to-date and
8260 provides some information and instructions on the "dynamic" ENGINE
8261 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
8264 *) Make it possible to unload ranges of ERR strings with a new
8265 "ERR_unload_strings" function.
8268 *) Add a copy() function to EVP_MD.
8271 *) Make EVP_MD routines take a context pointer instead of just the
8272 md_data void pointer.
8275 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
8276 that the digest can only process a single chunk of data
8277 (typically because it is provided by a piece of
8278 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
8279 is only going to provide a single chunk of data, and hence the
8280 framework needn't accumulate the data for oneshot drivers.
8283 *) As with "ERR", make it possible to replace the underlying "ex_data"
8284 functions. This change also alters the storage and management of global
8285 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
8286 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
8287 index counters. The API functions that use this state have been changed
8288 to take a "class_index" rather than pointers to the class's local STACK
8289 and counter, and there is now an API function to dynamically create new
8290 classes. This centralisation allows us to (a) plug a lot of the
8291 thread-safety problems that existed, and (b) makes it possible to clean
8292 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
8293 such data would previously have always leaked in application code and
8294 workarounds were in place to make the memory debugging turn a blind eye
8295 to it. Application code that doesn't use this new function will still
8296 leak as before, but their memory debugging output will announce it now
8297 rather than letting it slide.
8299 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
8300 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
8301 has a return value to indicate success or failure.
8304 *) Make it possible to replace the underlying "ERR" functions such that the
8305 global state (2 LHASH tables and 2 locks) is only used by the "default"
8306 implementation. This change also adds two functions to "get" and "set"
8307 the implementation prior to it being automatically set the first time
8308 any other ERR function takes place. Ie. an application can call "get",
8309 pass the return value to a module it has just loaded, and that module
8310 can call its own "set" function using that value. This means the
8311 module's "ERR" operations will use (and modify) the error state in the
8312 application and not in its own statically linked copy of OpenSSL code.
8315 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
8316 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
8317 the operation, and provides a more encapsulated way for external code
8318 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
8319 to use these functions rather than manually incrementing the counts.
8321 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
8324 *) Add EVP test program.
8327 *) Add symmetric cipher support to ENGINE. Expect the API to change!
8330 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
8331 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
8332 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
8333 These allow a CRL to be built without having to access X509_CRL fields
8334 directly. Modify 'ca' application to use new functions.
8337 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
8338 bug workarounds. Rollback attack detection is a security feature.
8339 The problem will only arise on OpenSSL servers when TLSv1 is not
8340 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
8341 Software authors not wanting to support TLSv1 will have special reasons
8342 for their choice and can explicitly enable this option.
8343 [Bodo Moeller, Lutz Jaenicke]
8345 *) Rationalise EVP so it can be extended: don't include a union of
8346 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
8347 (similar to those existing for EVP_CIPHER_CTX).
8352 EVP_MD_CTX_init(&md); /* new function call */
8353 EVP_DigestInit(&md, EVP_sha1());
8354 EVP_DigestUpdate(&md, in, len);
8355 EVP_DigestFinal(&md, out, NULL);
8356 EVP_MD_CTX_cleanup(&md); /* new function call */
8360 *) Make DES key schedule conform to the usual scheme, as well as
8361 correcting its structure. This means that calls to DES functions
8362 now have to pass a pointer to a des_key_schedule instead of a
8363 plain des_key_schedule (which was actually always a pointer
8366 des_key_schedule ks;
8368 des_set_key_checked(..., &ks);
8369 des_ncbc_encrypt(..., &ks, ...);
8371 (Note that a later change renames 'des_...' into 'DES_...'.)
8374 *) Initial reduction of linker bloat: the use of some functions, such as
8375 PEM causes large amounts of unused functions to be linked in due to
8376 poor organisation. For example pem_all.c contains every PEM function
8377 which has a knock on effect of linking in large amounts of (unused)
8378 ASN1 code. Grouping together similar functions and splitting unrelated
8379 functions prevents this.
8382 *) Cleanup of EVP macros.
8385 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
8386 correct _ecb suffix.
8389 *) Add initial OCSP responder support to ocsp application. The
8390 revocation information is handled using the text based index
8391 use by the ca application. The responder can either handle
8392 requests generated internally, supplied in files (for example
8393 via a CGI script) or using an internal minimal server.
8396 *) Add configuration choices to get zlib compression for TLS.
8399 *) Changes to Kerberos SSL for RFC 2712 compliance:
8400 1. Implemented real KerberosWrapper, instead of just using
8401 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
8402 2. Implemented optional authenticator field of KerberosWrapper.
8404 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
8405 and authenticator structs; see crypto/krb5/.
8407 Generalized Kerberos calls to support multiple Kerberos libraries.
8408 [Vern Staats <staatsvr@asc.hpc.mil>,
8409 Jeffrey Altman <jaltman@columbia.edu>
8410 via Richard Levitte]
8412 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
8413 already does with RSA. testdsa.h now has 'priv_key/pub_key'
8414 values for each of the key sizes rather than having just
8415 parameters (and 'speed' generating keys each time).
8418 *) Speed up EVP routines.
8421 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
8422 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
8423 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
8424 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
8426 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
8427 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
8428 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
8431 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
8433 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
8436 *) Added the OS2-EMX target.
8437 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
8439 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
8440 to support NCONF routines in extension code. New function CONF_set_nconf()
8441 to allow functions which take an NCONF to also handle the old LHASH
8442 structure: this means that the old CONF compatible routines can be
8443 retained (in particular wrt extensions) without having to duplicate the
8444 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
8447 *) Enhance the general user interface with mechanisms for inner control
8448 and with possibilities to have yes/no kind of prompts.
8451 *) Change all calls to low level digest routines in the library and
8452 applications to use EVP. Add missing calls to HMAC_cleanup() and
8453 don't assume HMAC_CTX can be copied using memcpy().
8454 [Verdon Walker <VWalker@novell.com>, Steve Henson]
8456 *) Add the possibility to control engines through control names but with
8457 arbitrary arguments instead of just a string.
8458 Change the key loaders to take a UI_METHOD instead of a callback
8459 function pointer. NOTE: this breaks binary compatibility with earlier
8460 versions of OpenSSL [engine].
8461 Adapt the nCipher code for these new conditions and add a card insertion
8465 *) Enhance the general user interface with mechanisms to better support
8466 dialog box interfaces, application-defined prompts, the possibility
8467 to use defaults (for example default passwords from somewhere else)
8468 and interrupts/cancellations.
8471 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
8472 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
8475 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
8476 tidy up some unnecessarily weird code in 'sk_new()').
8477 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
8479 *) Change the key loading routines for ENGINEs to use the same kind
8480 callback (pem_password_cb) as all other routines that need this
8484 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8485 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8486 than this minimum value is recommended.
8489 *) New random seeder for OpenVMS, using the system process statistics
8490 that are easily reachable.
8493 *) Windows apparently can't transparently handle global
8494 variables defined in DLLs. Initialisations such as:
8496 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8498 won't compile. This is used by the any applications that need to
8499 declare their own ASN1 modules. This was fixed by adding the option
8500 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8501 needed for static libraries under Win32.
8504 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8505 setting of purpose and trust fields. New X509_STORE trust and
8506 purpose functions and tidy up setting in other SSL functions.
8509 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8510 structure. These are inherited by X509_STORE_CTX when it is
8511 initialised. This allows various defaults to be set in the
8512 X509_STORE structure (such as flags for CRL checking and custom
8513 purpose or trust settings) for functions which only use X509_STORE_CTX
8514 internally such as S/MIME.
8516 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8517 trust settings if they are not set in X509_STORE. This allows X509_STORE
8518 purposes and trust (in S/MIME for example) to override any set by default.
8520 Add command line options for CRL checking to smime, s_client and s_server
8524 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8525 are set then the CRL is looked up in the X509_STORE structure and
8526 its validity and signature checked, then if the certificate is found
8527 in the CRL the verify fails with a revoked error.
8529 Various new CRL related callbacks added to X509_STORE_CTX structure.
8531 Command line options added to 'verify' application to support this.
8533 This needs some additional work, such as being able to handle multiple
8534 CRLs with different times, extension based lookup (rather than just
8535 by subject name) and ultimately more complete V2 CRL extension
8539 *) Add a general user interface API (crypto/ui/). This is designed
8540 to replace things like des_read_password and friends (backward
8541 compatibility functions using this new API are provided).
8542 The purpose is to remove prompting functions from the DES code
8543 section as well as provide for prompting through dialog boxes in
8544 a window system and the like.
8547 *) Add "ex_data" support to ENGINE so implementations can add state at a
8548 per-structure level rather than having to store it globally.
8551 *) Make it possible for ENGINE structures to be copied when retrieved by
8552 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8553 This causes the "original" ENGINE structure to act like a template,
8554 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8555 operational state can be localised to each ENGINE structure, despite the
8556 fact they all share the same "methods". New ENGINE structures returned in
8557 this case have no functional references and the return value is the single
8558 structural reference. This matches the single structural reference returned
8559 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8563 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8564 needs to match any other type at all we need to manually clear the
8568 *) Changes to the "openssl engine" utility to include;
8569 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8570 about an ENGINE's available control commands.
8571 - executing control commands from command line arguments using the
8572 '-pre' and '-post' switches. '-post' is only used if '-t' is
8573 specified and the ENGINE is successfully initialised. The syntax for
8574 the individual commands are colon-separated, for example;
8575 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8578 *) New dynamic control command support for ENGINEs. ENGINEs can now
8579 declare their own commands (numbers), names (strings), descriptions,
8580 and input types for run-time discovery by calling applications. A
8581 subset of these commands are implicitly classed as "executable"
8582 depending on their input type, and only these can be invoked through
8583 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8584 can be based on user input, config files, etc). The distinction is
8585 that "executable" commands cannot return anything other than a boolean
8586 result and can only support numeric or string input, whereas some
8587 discoverable commands may only be for direct use through
8588 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8589 pointers, or other custom uses. The "executable" commands are to
8590 support parameterisations of ENGINE behaviour that can be
8591 unambiguously defined by ENGINEs and used consistently across any
8592 OpenSSL-based application. Commands have been added to all the
8593 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8594 control over shared-library paths without source code alterations.
8597 *) Changed all ENGINE implementations to dynamically allocate their
8598 ENGINEs rather than declaring them statically. Apart from this being
8599 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8600 this also allows the implementations to compile without using the
8601 internal engine_int.h header.
8604 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8605 'const' value. Any code that should be able to modify a RAND_METHOD
8606 should already have non-const pointers to it (ie. they should only
8607 modify their own ones).
8610 *) Made a variety of little tweaks to the ENGINE code.
8611 - "atalla" and "ubsec" string definitions were moved from header files
8612 to C code. "nuron" string definitions were placed in variables
8613 rather than hard-coded - allowing parameterisation of these values
8614 later on via ctrl() commands.
8615 - Removed unused "#if 0"'d code.
8616 - Fixed engine list iteration code so it uses ENGINE_free() to release
8617 structural references.
8618 - Constified the RAND_METHOD element of ENGINE structures.
8619 - Constified various get/set functions as appropriate and added
8620 missing functions (including a catch-all ENGINE_cpy that duplicates
8621 all ENGINE values onto a new ENGINE except reference counts/state).
8622 - Removed NULL parameter checks in get/set functions. Setting a method
8623 or function to NULL is a way of cancelling out a previously set
8624 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8625 and doesn't justify the extra error symbols and code.
8626 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8627 flags from engine_int.h to engine.h.
8628 - Changed prototypes for ENGINE handler functions (init(), finish(),
8629 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8632 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8633 to the algorithm using long division. The binary algorithm can be
8634 used only if the modulus is odd. On 32-bit systems, it is faster
8635 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8636 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8637 up to 450 bits. In 64-bit environments, the binary algorithm
8638 appears to be advantageous for much longer moduli; here we use it
8639 for moduli up to 2048 bits.
8642 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8643 could not support the combine flag in choice fields.
8646 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8647 extensions from a certificate request to the certificate.
8650 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8651 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8652 file: this allows the display of the certificate about to be
8653 signed to be customised, to allow certain fields to be included
8654 or excluded and extension details. The old system didn't display
8655 multicharacter strings properly, omitted fields not in the policy
8656 and couldn't display additional details such as extensions.
8659 *) Function EC_POINTs_mul for multiple scalar multiplication
8660 of an arbitrary number of elliptic curve points
8661 \sum scalars[i]*points[i],
8662 optionally including the generator defined for the EC_GROUP:
8663 scalar*generator + \sum scalars[i]*points[i].
8665 EC_POINT_mul is a simple wrapper function for the typical case
8666 that the point list has just one item (besides the optional
8670 *) First EC_METHODs for curves over GF(p):
8672 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8673 operations and provides various method functions that can also
8674 operate with faster implementations of modular arithmetic.
8676 EC_GFp_mont_method() reuses most functions that are part of
8677 EC_GFp_simple_method, but uses Montgomery arithmetic.
8679 [Bodo Moeller; point addition and point doubling
8680 implementation directly derived from source code provided by
8681 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8683 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8684 crypto/ec/ec_lib.c):
8686 Curves are EC_GROUP objects (with an optional group generator)
8687 based on EC_METHODs that are built into the library.
8689 Points are EC_POINT objects based on EC_GROUP objects.
8691 Most of the framework would be able to handle curves over arbitrary
8692 finite fields, but as there are no obvious types for fields other
8693 than GF(p), some functions are limited to that for now.
8696 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8697 that the file contains a complete HTTP response.
8700 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8701 change the def and num file printf format specifier from "%-40sXXX"
8702 to "%-39s XXX". The latter will always guarantee a space after the
8703 field while the former will cause them to run together if the field
8704 is 40 of more characters long.
8707 *) Constify the cipher and digest 'method' functions and structures
8708 and modify related functions to take constant EVP_MD and EVP_CIPHER
8712 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8713 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8716 *) Modify EVP_Digest*() routines so they now return values. Although the
8717 internal software routines can never fail additional hardware versions
8721 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8723 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8724 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8727 ERR_R_NESTED_ASN1_ERROR
8729 ERR_R_MISSING_ASN1_EOS
8730 were 4 .. 9, conflicting with
8731 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8733 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8734 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8736 Add new error code 'ERR_R_INTERNAL_ERROR'.
8739 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8743 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8744 sets the subject name for a new request or supersedes the
8745 subject name in a given request. Formats that can be parsed are
8746 'CN=Some Name, OU=myOU, C=IT'
8748 'CN=Some Name/OU=myOU/C=IT'.
8750 Add options '-batch' and '-verbose' to 'openssl req'.
8751 [Massimiliano Pala <madwolf@hackmasters.net>]
8753 *) Introduce the possibility to access global variables through
8754 functions on platform were that's the best way to handle exporting
8755 global variables in shared libraries. To enable this functionality,
8756 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8757 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8758 is normally done by Configure or something similar).
8760 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8761 in the source file (foo.c) like this:
8763 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8764 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8766 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8767 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8769 OPENSSL_DECLARE_GLOBAL(int,foo);
8770 #define foo OPENSSL_GLOBAL_REF(foo)
8771 OPENSSL_DECLARE_GLOBAL(double,bar);
8772 #define bar OPENSSL_GLOBAL_REF(bar)
8774 The #defines are very important, and therefore so is including the
8775 header file everywhere where the defined globals are used.
8777 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8778 of ASN.1 items, but that structure is a bit different.
8780 The largest change is in util/mkdef.pl which has been enhanced with
8781 better and easier to understand logic to choose which symbols should
8782 go into the Windows .def files as well as a number of fixes and code
8783 cleanup (among others, algorithm keywords are now sorted
8784 lexicographically to avoid constant rewrites).
8787 *) In BN_div() keep a copy of the sign of 'num' before writing the
8788 result to 'rm' because if rm==num the value will be overwritten
8789 and produce the wrong result if 'num' is negative: this caused
8790 problems with BN_mod() and BN_nnmod().
8793 *) Function OCSP_request_verify(). This checks the signature on an
8794 OCSP request and verifies the signer certificate. The signer
8795 certificate is just checked for a generic purpose and OCSP request
8799 *) Add OCSP_check_validity() function to check the validity of OCSP
8800 responses. OCSP responses are prepared in real time and may only
8801 be a few seconds old. Simply checking that the current time lies
8802 between thisUpdate and nextUpdate max reject otherwise valid responses
8803 caused by either OCSP responder or client clock inaccuracy. Instead
8804 we allow thisUpdate and nextUpdate to fall within a certain period of
8805 the current time. The age of the response can also optionally be
8806 checked. Two new options -validity_period and -status_age added to
8810 *) If signature or public key algorithm is unrecognized print out its
8811 OID rather that just UNKNOWN.
8814 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8815 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8816 ID to be generated from the issuer certificate alone which can then be
8817 passed to OCSP_id_issuer_cmp().
8820 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8821 ASN1 modules to export functions returning ASN1_ITEM pointers
8822 instead of the ASN1_ITEM structures themselves. This adds several
8823 new macros which allow the underlying ASN1 function/structure to
8824 be accessed transparently. As a result code should not use ASN1_ITEM
8825 references directly (such as &X509_it) but instead use the relevant
8826 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8827 use of the new ASN1 code on platforms where exporting structures
8828 is problematical (for example in shared libraries) but exporting
8829 functions returning pointers to structures is not.
8832 *) Add support for overriding the generation of SSL/TLS session IDs.
8833 These callbacks can be registered either in an SSL_CTX or per SSL.
8834 The purpose of this is to allow applications to control, if they wish,
8835 the arbitrary values chosen for use as session IDs, particularly as it
8836 can be useful for session caching in multiple-server environments. A
8837 command-line switch for testing this (and any client code that wishes
8838 to use such a feature) has been added to "s_server".
8839 [Geoff Thorpe, Lutz Jaenicke]
8841 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8842 of the form '#if defined(...) || defined(...) || ...' and
8843 '#if !defined(...) && !defined(...) && ...'. This also avoids
8844 the growing number of special cases it was previously handling.
8847 *) Make all configuration macros available for application by making
8848 sure they are available in opensslconf.h, by giving them names starting
8849 with "OPENSSL_" to avoid conflicts with other packages and by making
8850 sure e_os2.h will cover all platform-specific cases together with
8852 Additionally, it is now possible to define configuration/platform-
8853 specific names (called "system identities"). In the C code, these
8854 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8855 macro with the name beginning with "OPENSSL_SYS_", which is determined
8856 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8860 *) New option -set_serial to 'req' and 'x509' this allows the serial
8861 number to use to be specified on the command line. Previously self
8862 signed certificates were hard coded with serial number 0 and the
8863 CA options of 'x509' had to use a serial number in a file which was
8867 *) New options to 'ca' utility to support V2 CRL entry extensions.
8868 Currently CRL reason, invalidity date and hold instruction are
8869 supported. Add new CRL extensions to V3 code and some new objects.
8872 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8873 disable standard block padding (aka PKCS#5 padding) in the EVP
8874 API, which was previously mandatory. This means that the data is
8875 not padded in any way and so the total length much be a multiple
8876 of the block size, otherwise an error occurs.
8879 *) Initial (incomplete) OCSP SSL support.
8882 *) New function OCSP_parse_url(). This splits up a URL into its host,
8883 port and path components: primarily to parse OCSP URLs. New -url
8884 option to ocsp utility.
8887 *) New nonce behavior. The return value of OCSP_check_nonce() now
8888 reflects the various checks performed. Applications can decide
8889 whether to tolerate certain situations such as an absent nonce
8890 in a response when one was present in a request: the ocsp application
8891 just prints out a warning. New function OCSP_add1_basic_nonce()
8892 this is to allow responders to include a nonce in a response even if
8893 the request is nonce-less.
8896 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8897 skipped when using openssl x509 multiple times on a single input file,
8898 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8901 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8902 set string type: to handle setting ASN1_TIME structures. Fix ca
8903 utility to correctly initialize revocation date of CRLs.
8906 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8907 the clients preferred ciphersuites and rather use its own preferences.
8908 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8909 Internet Explorer by ensuring unchanged hash method during stepup.
8910 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8913 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8914 to aes and add a new 'exist' option to print out symbols that don't
8918 *) Additional options to ocsp utility to allow flags to be set and
8919 additional certificates supplied.
8922 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8923 OCSP client a number of certificate to only verify the response
8927 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8928 handle the new API. Currently only ECB, CBC modes supported. Add new
8931 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8932 Encryption Standard (AES) Ciphersuites for Transport Layer
8933 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8934 not enabled by default and were not part of the "ALL" ciphersuite
8935 alias because they were not yet official; they could be
8936 explicitly requested by specifying the "AESdraft" ciphersuite
8937 group alias. In the final release of OpenSSL 0.9.7, the group
8938 alias is called "AES" and is part of "ALL".)
8939 [Ben Laurie, Steve Henson, Bodo Moeller]
8941 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8942 request to response.
8945 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8946 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8947 extract information from a certificate request. OCSP_response_create()
8948 creates a response and optionally adds a basic response structure.
8949 OCSP_basic_add1_status() adds a complete single response to a basic
8950 response and returns the OCSP_SINGLERESP structure just added (to allow
8951 extensions to be included for example). OCSP_basic_add1_cert() adds a
8952 certificate to a basic response and OCSP_basic_sign() signs a basic
8953 response with various flags. New helper functions ASN1_TIME_check()
8954 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8955 (converts ASN1_TIME to GeneralizedTime).
8958 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8959 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8960 structure from a certificate. X509_pubkey_digest() digests the public_key
8961 contents: this is used in various key identifiers.
8964 *) Make sk_sort() tolerate a NULL argument.
8965 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8967 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8968 passed by the function are trusted implicitly. If any of them signed the
8969 response then it is assumed to be valid and is not verified.
8972 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8973 to data. This was previously part of the PKCS7 ASN1 code. This
8974 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8975 [Steve Henson, reported by Kenneth R. Robinette
8976 <support@securenetterm.com>]
8978 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8979 routines: without these tracing memory leaks is very painful.
8980 Fix leaks in PKCS12 and PKCS7 routines.
8983 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8984 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8985 effectively meant GeneralizedTime would never be used. Now it
8986 is initialised to -1 but X509_time_adj() now has to check the value
8987 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8988 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8989 [Steve Henson, reported by Kenneth R. Robinette
8990 <support@securenetterm.com>]
8992 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8993 result in a zero length in the ASN1_INTEGER structure which was
8994 not consistent with the structure when d2i_ASN1_INTEGER() was used
8995 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8996 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8997 where it did not print out a minus for negative ASN1_INTEGER.
9000 *) Add summary printout to ocsp utility. The various functions which
9001 convert status values to strings have been renamed to:
9002 OCSP_response_status_str(), OCSP_cert_status_str() and
9003 OCSP_crl_reason_str() and are no longer static. New options
9004 to verify nonce values and to disable verification. OCSP response
9005 printout format cleaned up.
9008 *) Add additional OCSP certificate checks. These are those specified
9009 in RFC2560. This consists of two separate checks: the CA of the
9010 certificate being checked must either be the OCSP signer certificate
9011 or the issuer of the OCSP signer certificate. In the latter case the
9012 OCSP signer certificate must contain the OCSP signing extended key
9013 usage. This check is performed by attempting to match the OCSP
9014 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
9015 in the OCSP_CERTID structures of the response.
9018 *) Initial OCSP certificate verification added to OCSP_basic_verify()
9019 and related routines. This uses the standard OpenSSL certificate
9020 verify routines to perform initial checks (just CA validity) and
9021 to obtain the certificate chain. Then additional checks will be
9022 performed on the chain. Currently the root CA is checked to see
9023 if it is explicitly trusted for OCSP signing. This is used to set
9024 a root CA as a global signing root: that is any certificate that
9025 chains to that CA is an acceptable OCSP signing certificate.
9028 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
9029 extensions from a separate configuration file.
9030 As when reading extensions from the main configuration file,
9031 the '-extensions ...' option may be used for specifying the
9033 [Massimiliano Pala <madwolf@comune.modena.it>]
9035 *) New OCSP utility. Allows OCSP requests to be generated or
9036 read. The request can be sent to a responder and the output
9037 parsed, outputted or printed in text form. Not complete yet:
9038 still needs to check the OCSP response validity.
9041 *) New subcommands for 'openssl ca':
9042 'openssl ca -status <serial>' prints the status of the cert with
9043 the given serial number (according to the index file).
9044 'openssl ca -updatedb' updates the expiry status of certificates
9046 [Massimiliano Pala <madwolf@comune.modena.it>]
9048 *) New '-newreq-nodes' command option to CA.pl. This is like
9049 '-newreq', but calls 'openssl req' with the '-nodes' option
9050 so that the resulting key is not encrypted.
9051 [Damien Miller <djm@mindrot.org>]
9053 *) New configuration for the GNU Hurd.
9054 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
9056 *) Initial code to implement OCSP basic response verify. This
9057 is currently incomplete. Currently just finds the signer's
9058 certificate and verifies the signature on the response.
9061 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
9062 value of OPENSSLDIR. This is available via the new '-d' option
9063 to 'openssl version', and is also included in 'openssl version -a'.
9066 *) Allowing defining memory allocation callbacks that will be given
9067 file name and line number information in additional arguments
9068 (a const char* and an int). The basic functionality remains, as
9069 well as the original possibility to just replace malloc(),
9070 realloc() and free() by functions that do not know about these
9071 additional arguments. To register and find out the current
9072 settings for extended allocation functions, the following
9073 functions are provided:
9075 CRYPTO_set_mem_ex_functions
9076 CRYPTO_set_locked_mem_ex_functions
9077 CRYPTO_get_mem_ex_functions
9078 CRYPTO_get_locked_mem_ex_functions
9080 These work the same way as CRYPTO_set_mem_functions and friends.
9081 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
9082 extended allocation function is enabled.
9083 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
9084 a conventional allocation function is enabled.
9085 [Richard Levitte, Bodo Moeller]
9087 *) Finish off removing the remaining LHASH function pointer casts.
9088 There should no longer be any prototype-casting required when using
9089 the LHASH abstraction, and any casts that remain are "bugs". See
9090 the callback types and macros at the head of lhash.h for details
9091 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
9094 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
9095 If /dev/[u]random devices are not available or do not return enough
9096 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
9098 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
9099 /etc/entropy will be queried once each in this sequence, querying stops
9100 when enough entropy was collected without querying more sockets.
9103 *) Change the Unix RAND_poll() variant to be able to poll several
9104 random devices, as specified by DEVRANDOM, until a sufficient amount
9105 of data has been collected. We spend at most 10 ms on each file
9106 (select timeout) and read in non-blocking mode. DEVRANDOM now
9107 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
9108 (previously it was just the string "/dev/urandom"), so on typical
9109 platforms the 10 ms delay will never occur.
9110 Also separate out the Unix variant to its own file, rand_unix.c.
9111 For VMS, there's a currently-empty rand_vms.c.
9114 *) Move OCSP client related routines to ocsp_cl.c. These
9115 provide utility functions which an application needing
9116 to issue a request to an OCSP responder and analyse the
9117 response will typically need: as opposed to those which an
9118 OCSP responder itself would need which will be added later.
9120 OCSP_request_sign() signs an OCSP request with an API similar
9121 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
9122 response. OCSP_response_get1_basic() extracts basic response
9123 from response. OCSP_resp_find_status(): finds and extracts status
9124 information from an OCSP_CERTID structure (which will be created
9125 when the request structure is built). These are built from lower
9126 level functions which work on OCSP_SINGLERESP structures but
9127 won't normally be used unless the application wishes to examine
9128 extensions in the OCSP response for example.
9130 Replace nonce routines with a pair of functions.
9131 OCSP_request_add1_nonce() adds a nonce value and optionally
9132 generates a random value. OCSP_check_nonce() checks the
9133 validity of the nonce in an OCSP response.
9136 *) Change function OCSP_request_add() to OCSP_request_add0_id().
9137 This doesn't copy the supplied OCSP_CERTID and avoids the
9138 need to free up the newly created id. Change return type
9139 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
9140 This can then be used to add extensions to the request.
9141 Deleted OCSP_request_new(), since most of its functionality
9142 is now in OCSP_REQUEST_new() (and the case insensitive name
9143 clash) apart from the ability to set the request name which
9144 will be added elsewhere.
9147 *) Update OCSP API. Remove obsolete extensions argument from
9148 various functions. Extensions are now handled using the new
9149 OCSP extension code. New simple OCSP HTTP function which
9150 can be used to send requests and parse the response.
9153 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
9154 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
9155 uses the special reorder version of SET OF to sort the attributes
9156 and reorder them to match the encoded order. This resolves a long
9157 standing problem: a verify on a PKCS7 structure just after signing
9158 it used to fail because the attribute order did not match the
9159 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
9160 it uses the received order. This is necessary to tolerate some broken
9161 software that does not order SET OF. This is handled by encoding
9162 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
9163 to produce the required SET OF.
9166 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
9167 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
9168 files to get correct declarations of the ASN.1 item variables.
9171 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
9172 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
9173 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
9174 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
9175 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
9176 ASN1_ITEM and no wrapper functions.
9179 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
9180 replace the old function pointer based I/O routines. Change most of
9181 the *_d2i_bio() and *_d2i_fp() functions to use these.
9184 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
9185 lines, recognize more "algorithms" that can be deselected, and make
9186 it complain about algorithm deselection that isn't recognised.
9189 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
9190 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
9191 to use new functions. Add NO_ASN1_OLD which can be set to remove
9192 some old style ASN1 functions: this can be used to determine if old
9193 code will still work when these eventually go away.
9196 *) New extension functions for OCSP structures, these follow the
9197 same conventions as certificates and CRLs.
9200 *) New function X509V3_add1_i2d(). This automatically encodes and
9201 adds an extension. Its behaviour can be customised with various
9202 flags to append, replace or delete. Various wrappers added for
9203 certificates and CRLs.
9206 *) Fix to avoid calling the underlying ASN1 print routine when
9207 an extension cannot be parsed. Correct a typo in the
9208 OCSP_SERVICELOC extension. Tidy up print OCSP format.
9211 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
9212 entries for variables.
9215 *) Add functionality to apps/openssl.c for detecting locking
9216 problems: As the program is single-threaded, all we have
9217 to do is register a locking callback using an array for
9218 storing which locks are currently held by the program.
9221 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
9222 SSL_get_ex_data_X509_STORE_idx(), which is used in
9223 ssl_verify_cert_chain() and thus can be called at any time
9224 during TLS/SSL handshakes so that thread-safety is essential.
9225 Unfortunately, the ex_data design is not at all suited
9226 for multi-threaded use, so it probably should be abolished.
9229 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
9230 [Broadcom, tweaked and integrated by Geoff Thorpe]
9232 *) Move common extension printing code to new function
9233 X509V3_print_extensions(). Reorganise OCSP print routines and
9234 implement some needed OCSP ASN1 functions. Add OCSP extensions.
9237 *) New function X509_signature_print() to remove duplication in some
9241 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
9242 set (this was treated exactly the same as SET OF previously). This
9243 is used to reorder the STACK representing the structure to match the
9244 encoding. This will be used to get round a problem where a PKCS7
9245 structure which was signed could not be verified because the STACK
9246 order did not reflect the encoded order.
9249 *) Reimplement the OCSP ASN1 module using the new code.
9252 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
9253 for its ASN1 operations. The old style function pointers still exist
9254 for now but they will eventually go away.
9257 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
9258 completely replaces the old ASN1 functionality with a table driven
9259 encoder and decoder which interprets an ASN1_ITEM structure describing
9260 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
9261 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
9262 has also been converted to the new form.
9265 *) Change BN_mod_exp_recp so that negative moduli are tolerated
9266 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
9267 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
9268 for negative moduli.
9271 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
9272 of not touching the result's sign bit.
9275 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
9279 *) Changed the LHASH code to use prototypes for callbacks, and created
9280 macros to declare and implement thin (optionally static) functions
9281 that provide type-safety and avoid function pointer casting for the
9282 type-specific callbacks.
9285 *) Added Kerberos Cipher Suites to be used with TLS, as written in
9287 [Veers Staats <staatsvr@asc.hpc.mil>,
9288 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
9290 *) Reformat the FAQ so the different questions and answers can be divided
9291 in sections depending on the subject.
9294 *) Have the zlib compression code load ZLIB.DLL dynamically under
9298 *) New function BN_mod_sqrt for computing square roots modulo a prime
9299 (using the probabilistic Tonelli-Shanks algorithm unless
9300 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
9301 be handled deterministically).
9302 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9304 *) Make BN_mod_inverse faster by explicitly handling small quotients
9305 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
9306 512 bits], about 30% for larger ones [1024 or 2048 bits].)
9309 *) New function BN_kronecker.
9312 *) Fix BN_gcd so that it works on negative inputs; the result is
9313 positive unless both parameters are zero.
9314 Previously something reasonably close to an infinite loop was
9315 possible because numbers could be growing instead of shrinking
9316 in the implementation of Euclid's algorithm.
9319 *) Fix BN_is_word() and BN_is_one() macros to take into account the
9320 sign of the number in question.
9322 Fix BN_is_word(a,w) to work correctly for w == 0.
9324 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
9325 because its test if the absolute value of 'a' equals 'w'.
9326 Note that BN_abs_is_word does *not* handle w == 0 reliably;
9327 it exists mostly for use in the implementations of BN_is_zero(),
9328 BN_is_one(), and BN_is_word().
9331 *) New function BN_swap.
9334 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
9335 the exponentiation functions are more likely to produce reasonable
9336 results on negative inputs.
9339 *) Change BN_mod_mul so that the result is always non-negative.
9340 Previously, it could be negative if one of the factors was negative;
9341 I don't think anyone really wanted that behaviour.
9344 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
9345 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
9346 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
9347 and add new functions:
9356 BN_mod_lshift1_quick
9360 These functions always generate non-negative results.
9362 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
9363 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
9365 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
9366 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
9367 be reduced modulo m.
9368 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9371 The following entry accidentally appeared in the CHANGES file
9372 distributed with OpenSSL 0.9.7. The modifications described in
9373 it do *not* apply to OpenSSL 0.9.7.
9375 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
9376 was actually never needed) and in BN_mul(). The removal in BN_mul()
9377 required a small change in bn_mul_part_recursive() and the addition
9378 of the functions bn_cmp_part_words(), bn_sub_part_words() and
9379 bn_add_part_words(), which do the same thing as bn_cmp_words(),
9380 bn_sub_words() and bn_add_words() except they take arrays with
9385 *) In 'openssl passwd', verify passwords read from the terminal
9386 unless the '-salt' option is used (which usually means that
9387 verification would just waste user's time since the resulting
9388 hash is going to be compared with some given password hash)
9389 or the new '-noverify' option is used.
9391 This is an incompatible change, but it does not affect
9392 non-interactive use of 'openssl passwd' (passwords on the command
9393 line, '-stdin' option, '-in ...' option) and thus should not
9397 *) Remove all references to RSAref, since there's no more need for it.
9400 *) Make DSO load along a path given through an environment variable
9401 (SHLIB_PATH) with shl_load().
9404 *) Constify the ENGINE code as a result of BIGNUM constification.
9405 Also constify the RSA code and most things related to it. In a
9406 few places, most notable in the depth of the ASN.1 code, ugly
9407 casts back to non-const were required (to be solved at a later
9411 *) Make it so the openssl application has all engines loaded by default.
9414 *) Constify the BIGNUM routines a little more.
9417 *) Add the following functions:
9419 ENGINE_load_cswift()
9421 ENGINE_load_atalla()
9423 ENGINE_load_builtin_engines()
9425 That way, an application can itself choose if external engines that
9426 are built-in in OpenSSL shall ever be used or not. The benefit is
9427 that applications won't have to be linked with libdl or other dso
9428 libraries unless it's really needed.
9430 Changed 'openssl engine' to load all engines on demand.
9431 Changed the engine header files to avoid the duplication of some
9432 declarations (they differed!).
9435 *) 'openssl engine' can now list capabilities.
9438 *) Better error reporting in 'openssl engine'.
9441 *) Never call load_dh_param(NULL) in s_server.
9444 *) Add engine application. It can currently list engines by name and
9445 identity, and test if they are actually available.
9448 *) Improve RPM specification file by forcing symbolic linking and making
9449 sure the installed documentation is also owned by root.root.
9450 [Damien Miller <djm@mindrot.org>]
9452 *) Give the OpenSSL applications more possibilities to make use of
9453 keys (public as well as private) handled by engines.
9456 *) Add OCSP code that comes from CertCo.
9459 *) Add VMS support for the Rijndael code.
9462 *) Added untested support for Nuron crypto accelerator.
9465 *) Add support for external cryptographic devices. This code was
9466 previously distributed separately as the "engine" branch.
9467 [Geoff Thorpe, Richard Levitte]
9469 *) Rework the filename-translation in the DSO code. It is now possible to
9470 have far greater control over how a "name" is turned into a filename
9471 depending on the operating environment and any oddities about the
9472 different shared library filenames on each system.
9475 *) Support threads on FreeBSD-elf in Configure.
9478 *) Fix for SHA1 assembly problem with MASM: it produces
9479 warnings about corrupt line number information when assembling
9480 with debugging information. This is caused by the overlapping
9482 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9485 NCONF_get_number() has no error checking at all. As a replacement,
9486 NCONF_get_number_e() is defined (_e for "error checking") and is
9487 promoted strongly. The old NCONF_get_number is kept around for
9488 binary backward compatibility.
9489 Make it possible for methods to load from something other than a BIO,
9490 by providing a function pointer that is given a name instead of a BIO.
9491 For example, this could be used to load configuration data from an
9495 *) Fix for non blocking accept BIOs. Added new I/O special reason
9496 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9497 with non blocking I/O was not possible because no retry code was
9498 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9502 *) Added the beginnings of Rijndael support.
9505 *) Fix for bug in DirectoryString mask setting. Add support for
9506 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9507 to allow certificate printing to more controllable, additional
9508 'certopt' option to 'x509' to allow new printing options to be
9512 *) Clean old EAY MD5 hack from e_os.h.
9515 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9517 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9518 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9519 [Joe Orton, Steve Henson]
9521 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9523 *) Fix additional bug revealed by the NISCC test suite:
9525 Stop bug triggering large recursion when presented with
9526 certain ASN.1 tags (CVE-2003-0851)
9529 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9531 *) Fix various bugs revealed by running the NISCC test suite:
9533 Stop out of bounds reads in the ASN1 code when presented with
9534 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9536 If verify callback ignores invalid public key errors don't try to check
9537 certificate signature with the NULL public key.
9541 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9542 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9546 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9547 extra data after the compression methods not only for TLS 1.0
9548 but also for SSL 3.0 (as required by the specification).
9549 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9551 *) Change X509_certificate_type() to mark the key as exported/exportable
9552 when it's 512 *bits* long, not 512 bytes.
9555 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9557 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9558 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9559 a protocol version number mismatch like a decryption error
9560 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9563 *) Turn on RSA blinding by default in the default implementation
9564 to avoid a timing attack. Applications that don't want it can call
9565 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9566 They would be ill-advised to do so in most cases.
9567 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9569 *) Change RSA blinding code so that it works when the PRNG is not
9570 seeded (in this case, the secret RSA exponent is abused as
9571 an unpredictable seed -- if it is not unpredictable, there
9572 is no point in blinding anyway). Make RSA blinding thread-safe
9573 by remembering the creator's thread ID in rsa->blinding and
9574 having all other threads use local one-time blinding factors
9575 (this requires more computation than sharing rsa->blinding, but
9576 avoids excessive locking; and if an RSA object is not shared
9577 between threads, blinding will still be very fast).
9580 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9582 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9583 via timing by performing a MAC computation even if incorrect
9584 block cipher padding has been found. This is a countermeasure
9585 against active attacks where the attacker has to distinguish
9586 between bad padding and a MAC verification error. (CVE-2003-0078)
9588 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9589 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9590 Martin Vuagnoux (EPFL, Ilion)]
9592 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9594 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9595 memory from its contents. This is done with a counter that will
9596 place alternating values in each byte. This can be used to solve
9597 two issues: 1) the removal of calls to memset() by highly optimizing
9598 compilers, and 2) cleansing with other values than 0, since those can
9599 be read through on certain media, for example a swap space on disk.
9602 *) Bugfix: client side session caching did not work with external caching,
9603 because the session->cipher setting was not restored when reloading
9604 from the external cache. This problem was masked, when
9605 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9606 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9609 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9610 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9611 [Zeev Lieber <zeev-l@yahoo.com>]
9613 *) Undo an undocumented change introduced in 0.9.6e which caused
9614 repeated calls to OpenSSL_add_all_ciphers() and
9615 OpenSSL_add_all_digests() to be ignored, even after calling
9619 *) Change the default configuration reader to deal with last line not
9620 being properly terminated.
9623 *) Change X509_NAME_cmp() so it applies the special rules on handling
9624 DN values that are of type PrintableString, as well as RDNs of type
9625 emailAddress where the value has the type ia5String.
9626 [stefank@valicert.com via Richard Levitte]
9628 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9629 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9630 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9631 the bitwise-OR of the two for use by the majority of applications
9632 wanting this behaviour, and update the docs. The documented
9633 behaviour and actual behaviour were inconsistent and had been
9634 changing anyway, so this is more a bug-fix than a behavioural
9636 [Geoff Thorpe, diagnosed by Nadav Har'El]
9638 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9639 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9642 *) Fix initialization code race conditions in
9643 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9644 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9645 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9646 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9647 ssl2_get_cipher_by_char(),
9648 ssl3_get_cipher_by_char().
9649 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9651 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9652 the cached sessions are flushed, as the remove_cb() might use ex_data
9653 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9654 (see [openssl.org #212]).
9655 [Geoff Thorpe, Lutz Jaenicke]
9657 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9658 length, instead of the encoding length to d2i_ASN1_OBJECT.
9661 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9663 *) [In 0.9.6g-engine release:]
9664 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9665 [Lynn Gazis <lgazis@rainbow.com>]
9667 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9669 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9670 and get fix the header length calculation.
9671 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9672 Alon Kantor <alonk@checkpoint.com> (and others),
9675 *) Use proper error handling instead of 'assertions' in buffer
9676 overflow checks added in 0.9.6e. This prevents DoS (the
9677 assertions could call abort()).
9678 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9680 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9682 *) Add various sanity checks to asn1_get_length() to reject
9683 the ASN1 length bytes if they exceed sizeof(long), will appear
9684 negative or the content length exceeds the length of the
9686 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9688 *) Fix cipher selection routines: ciphers without encryption had no flags
9689 for the cipher strength set and where therefore not handled correctly
9690 by the selection routines (PR #130).
9693 *) Fix EVP_dsa_sha macro.
9697 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9698 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9699 that was added in OpenSSL 0.9.6d.
9701 As the countermeasure turned out to be incompatible with some
9702 broken SSL implementations, the new option is part of SSL_OP_ALL.
9703 SSL_OP_ALL is usually employed when compatibility with weird SSL
9704 implementations is desired (e.g. '-bugs' option to 's_client' and
9705 's_server'), so the new option is automatically set in many
9709 *) Changes in security patch:
9711 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9712 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9713 Air Force Materiel Command, USAF, under agreement number
9716 *) Add various sanity checks to asn1_get_length() to reject
9717 the ASN1 length bytes if they exceed sizeof(long), will appear
9718 negative or the content length exceeds the length of the
9719 supplied buffer. (CVE-2002-0659)
9720 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9722 *) Assertions for various potential buffer overflows, not known to
9724 [Ben Laurie (CHATS)]
9726 *) Various temporary buffers to hold ASCII versions of integers were
9727 too small for 64 bit platforms. (CVE-2002-0655)
9728 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9730 *) Remote buffer overflow in SSL3 protocol - an attacker could
9731 supply an oversized session ID to a client. (CVE-2002-0656)
9732 [Ben Laurie (CHATS)]
9734 *) Remote buffer overflow in SSL2 protocol - an attacker could
9735 supply an oversized client master key. (CVE-2002-0656)
9736 [Ben Laurie (CHATS)]
9738 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9740 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9741 encoded as NULL) with id-dsa-with-sha1.
9742 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9744 *) Check various X509_...() return values in apps/req.c.
9745 [Nils Larsch <nla@trustcenter.de>]
9747 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9748 an end-of-file condition would erroneously be flagged, when the CRLF
9749 was just at the end of a processed block. The bug was discovered when
9750 processing data through a buffering memory BIO handing the data to a
9751 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9752 <ptsekov@syntrex.com> and Nedelcho Stanev.
9755 *) Implement a countermeasure against a vulnerability recently found
9756 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9757 before application data chunks to avoid the use of known IVs
9758 with data potentially chosen by the attacker.
9761 *) Fix length checks in ssl3_get_client_hello().
9764 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9765 to prevent ssl3_read_internal() from incorrectly assuming that
9766 ssl3_read_bytes() found application data while handshake
9767 processing was enabled when in fact s->s3->in_read_app_data was
9768 merely automatically cleared during the initial handshake.
9769 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9771 *) Fix object definitions for Private and Enterprise: they were not
9772 recognized in their shortname (=lowercase) representation. Extend
9773 obj_dat.pl to issue an error when using undefined keywords instead
9774 of silently ignoring the problem (Svenning Sorensen
9775 <sss@sss.dnsalias.net>).
9778 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9779 generators, i.e. generators other than 2 and 5. (Previously, the
9780 code did not properly initialise the 'add' and 'rem' values to
9781 BN_generate_prime().)
9783 In the new general case, we do not insist that 'generator' is
9784 actually a primitive root: This requirement is rather pointless;
9785 a generator of the order-q subgroup is just as good, if not
9789 *) Map new X509 verification errors to alerts. Discovered and submitted by
9790 Tom Wu <tom@arcot.com>.
9793 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9794 returning non-zero before the data has been completely received
9795 when using non-blocking I/O.
9796 [Bodo Moeller; problem pointed out by John Hughes]
9798 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9799 [Ben Laurie, Lutz Jaenicke]
9801 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9802 Yoram Zahavi <YoramZ@gilian.com>).
9805 *) Add information about CygWin 1.3 and on, and preserve proper
9806 configuration for the versions before that.
9807 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9809 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9810 check whether we deal with a copy of a session and do not delete from
9811 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9812 <izhar@checkpoint.com>.
9815 *) Do not store session data into the internal session cache, if it
9816 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9817 flag is set). Proposed by Aslam <aslam@funk.com>.
9820 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9824 *) [In 0.9.6d-engine release:]
9825 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9826 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9828 *) Add the configuration target linux-s390x.
9829 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9831 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9832 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9833 variable as an indication that a ClientHello message has been
9834 received. As the flag value will be lost between multiple
9835 invocations of ssl3_accept when using non-blocking I/O, the
9836 function may not be aware that a handshake has actually taken
9837 place, thus preventing a new session from being added to the
9840 To avoid this problem, we now set s->new_session to 2 instead of
9841 using a local variable.
9842 [Lutz Jaenicke, Bodo Moeller]
9844 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9845 if the SSL_R_LENGTH_MISMATCH error is detected.
9846 [Geoff Thorpe, Bodo Moeller]
9848 *) New 'shared_ldflag' column in Configure platform table.
9851 *) Fix EVP_CIPHER_mode macro.
9852 ["Dan S. Camper" <dan@bti.net>]
9854 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9855 type, we must throw them away by setting rr->length to 0.
9856 [D P Chang <dpc@qualys.com>]
9858 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9860 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9861 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9862 worked incorrectly for those cases where range = 10..._2 and
9863 3*range is two bits longer than range.)
9866 *) Only add signing time to PKCS7 structures if it is not already
9870 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9871 OBJ_ld_ce should be OBJ_id_ce.
9872 Also some ip-pda OIDs in crypto/objects/objects.txt were
9873 incorrect (cf. RFC 3039).
9874 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9876 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9877 returns early because it has nothing to do.
9878 [Andy Schneider <andy.schneider@bjss.co.uk>]
9880 *) [In 0.9.6c-engine release:]
9881 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9882 [Andy Schneider <andy.schneider@bjss.co.uk>]
9884 *) [In 0.9.6c-engine release:]
9885 Add support for Cryptographic Appliance's keyserver technology.
9886 (Use engine 'keyclient')
9887 [Cryptographic Appliances and Geoff Thorpe]
9889 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9890 is called via tools/c89.sh because arguments have to be
9891 rearranged (all '-L' options must appear before the first object
9893 [Richard Shapiro <rshapiro@abinitio.com>]
9895 *) [In 0.9.6c-engine release:]
9896 Add support for Broadcom crypto accelerator cards, backported
9898 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9900 *) [In 0.9.6c-engine release:]
9901 Add support for SureWare crypto accelerator cards from
9902 Baltimore Technologies. (Use engine 'sureware')
9903 [Baltimore Technologies and Mark Cox]
9905 *) [In 0.9.6c-engine release:]
9906 Add support for crypto accelerator cards from Accelerated
9907 Encryption Processing, www.aep.ie. (Use engine 'aep')
9908 [AEP Inc. and Mark Cox]
9910 *) Add a configuration entry for gcc on UnixWare.
9911 [Gary Benson <gbenson@redhat.com>]
9913 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9914 messages are stored in a single piece (fixed-length part and
9915 variable-length part combined) and fix various bugs found on the way.
9918 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9919 instead. BIO_gethostbyname() does not know what timeouts are
9920 appropriate, so entries would stay in cache even when they have
9922 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9924 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9925 faced with a pathologically small ClientHello fragment that does
9926 not contain client_version: Instead of aborting with an error,
9927 simply choose the highest available protocol version (i.e.,
9928 TLS 1.0 unless it is disabled). In practice, ClientHello
9929 messages are never sent like this, but this change gives us
9930 strictly correct behaviour at least for TLS.
9933 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9934 never resets s->method to s->ctx->method when called from within
9935 one of the SSL handshake functions.
9936 [Bodo Moeller; problem pointed out by Niko Baric]
9938 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9939 (sent using the client's version number) if client_version is
9940 smaller than the protocol version in use. Also change
9941 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9942 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9943 the client will at least see that alert.
9946 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9950 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9951 client receives HelloRequest while in a handshake.
9952 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9954 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9955 should end in 'break', not 'goto end' which circumvents various
9956 cleanups done in state SSL_ST_OK. But session related stuff
9957 must be disabled for SSL_ST_OK in the case that we just sent a
9960 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9961 before just sending a HelloRequest.
9962 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9964 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9965 reveal whether illegal block cipher padding was found or a MAC
9966 verification error occurred. (Neither SSLerr() codes nor alerts
9967 are directly visible to potential attackers, but the information
9968 may leak via logfiles.)
9970 Similar changes are not required for the SSL 2.0 implementation
9971 because the number of padding bytes is sent in clear for SSL 2.0,
9972 and the extra bytes are just ignored. However ssl/s2_pkt.c
9973 failed to verify that the purported number of padding bytes is in
9977 *) Add OpenUNIX-8 support including shared libraries
9978 (Boyd Lynn Gerber <gerberb@zenez.com>).
9981 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9982 'wristwatch attack' using huge encoding parameters (cf.
9983 James H. Manger's CRYPTO 2001 paper). Note that the
9984 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9985 encoding parameters and hence was not vulnerable.
9988 *) BN_sqr() bug fix.
9989 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9991 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9992 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9993 followed by modular reduction.
9994 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9996 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9997 equivalent based on BN_pseudo_rand() instead of BN_rand().
10000 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
10001 This function was broken, as the check for a new client hello message
10002 to handle SGC did not allow these large messages.
10003 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
10006 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
10009 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
10010 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
10013 *) Rework the configuration and shared library support for Tru64 Unix.
10014 The configuration part makes use of modern compiler features and
10015 still retains old compiler behavior for those that run older versions
10016 of the OS. The shared library support part includes a variant that
10017 uses the RPATH feature, and is available through the special
10018 configuration target "alpha-cc-rpath", which will never be selected
10020 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
10022 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
10023 with the same message size as in ssl3_get_certificate_request().
10024 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
10025 messages might inadvertently be reject as too long.
10026 [Petr Lampa <lampa@fee.vutbr.cz>]
10028 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
10031 *) Modified SSL library such that the verify_callback that has been set
10032 specifically for an SSL object with SSL_set_verify() is actually being
10033 used. Before the change, a verify_callback set with this function was
10034 ignored and the verify_callback() set in the SSL_CTX at the time of
10035 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
10036 to allow the necessary settings.
10039 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
10040 explicitly to NULL, as at least on Solaris 8 this seems not always to be
10041 done automatically (in contradiction to the requirements of the C
10042 standard). This made problems when used from OpenSSH.
10045 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
10046 dh->length and always used
10048 BN_rand_range(priv_key, dh->p).
10050 BN_rand_range() is not necessary for Diffie-Hellman, and this
10051 specific range makes Diffie-Hellman unnecessarily inefficient if
10052 dh->length (recommended exponent length) is much smaller than the
10053 length of dh->p. We could use BN_rand_range() if the order of
10054 the subgroup was stored in the DH structure, but we only have
10059 BN_rand(priv_key, l, ...)
10061 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
10067 RSA_eay_public_encrypt
10068 RSA_eay_private_decrypt
10069 RSA_eay_private_encrypt (signing)
10070 RSA_eay_public_decrypt (signature verification)
10072 (default implementations for RSA_public_encrypt,
10073 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
10074 always reject numbers >= n.
10077 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
10078 to synchronize access to 'locking_thread'. This is necessary on
10079 systems where access to 'locking_thread' (an 'unsigned long'
10080 variable) is not atomic.
10083 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
10084 *before* setting the 'crypto_lock_rand' flag. The previous code had
10085 a race condition if 0 is a valid thread ID.
10086 [Travis Vitek <vitek@roguewave.com>]
10088 *) Add support for shared libraries under Irix.
10089 [Albert Chin-A-Young <china@thewrittenword.com>]
10091 *) Add configuration option to build on Linux on both big-endian and
10092 little-endian MIPS.
10093 [Ralf Baechle <ralf@uni-koblenz.de>]
10095 *) Add the possibility to create shared libraries on HP-UX.
10098 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
10100 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
10101 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
10102 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
10103 PRNG state recovery was possible based on the output of
10104 one PRNG request appropriately sized to gain knowledge on
10105 'md' followed by enough consecutive 1-byte PRNG requests
10106 to traverse all of 'state'.
10108 1. When updating 'md_local' (the current thread's copy of 'md')
10109 during PRNG output generation, hash all of the previous
10110 'md_local' value, not just the half used for PRNG output.
10112 2. Make the number of bytes from 'state' included into the hash
10113 independent from the number of PRNG bytes requested.
10115 The first measure alone would be sufficient to avoid
10116 Markku-Juhani's attack. (Actually it had never occurred
10117 to me that the half of 'md_local' used for chaining was the
10118 half from which PRNG output bytes were taken -- I had always
10119 assumed that the secret half would be used.) The second
10120 measure makes sure that additional data from 'state' is never
10121 mixed into 'md_local' in small portions; this heuristically
10122 further strengthens the PRNG.
10125 *) Fix crypto/bn/asm/mips3.s.
10128 *) When only the key is given to "enc", the IV is undefined. Print out
10129 an error message in this case.
10132 *) Handle special case when X509_NAME is empty in X509 printing routines.
10135 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
10136 positive and less than q.
10139 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
10140 used: it isn't thread safe and the add_lock_callback should handle
10142 [Paul Rose <Paul.Rose@bridge.com>]
10144 *) Verify that incoming data obeys the block size in
10145 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
10149 [Ulf Möller, Bodo Möller]
10151 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
10152 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
10153 when fixing the server behaviour for backwards-compatible 'client
10154 hello' messages. (Note that the attack is impractical against
10155 SSL 3.0 and TLS 1.0 anyway because length and version checking
10156 means that the probability of guessing a valid ciphertext is
10157 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
10160 Before 0.9.5, the countermeasure (hide the error by generating a
10161 random 'decryption result') did not work properly because
10162 ERR_clear_error() was missing, meaning that SSL_get_error() would
10163 detect the supposedly ignored error.
10165 Both problems are now fixed.
10168 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
10169 (previously it was 1024).
10172 *) Fix for compatibility mode trust settings: ignore trust settings
10173 unless some valid trust or reject settings are present.
10176 *) Fix for blowfish EVP: its a variable length cipher.
10179 *) Fix various bugs related to DSA S/MIME verification. Handle missing
10180 parameters in DSA public key structures and return an error in the
10181 DSA routines if parameters are absent.
10184 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
10185 in the current directory if neither $RANDFILE nor $HOME was set.
10186 RAND_file_name() in 0.9.6a returned NULL in this case. This has
10187 caused some confusion to Windows users who haven't defined $HOME.
10188 Thus RAND_file_name() is changed again: e_os.h can define a
10189 DEFAULT_HOME, which will be used if $HOME is not set.
10190 For Windows, we use "C:"; on other platforms, we still require
10191 environment variables.
10193 *) Move 'if (!initialized) RAND_poll()' into regions protected by
10194 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
10195 having multiple threads call RAND_poll() concurrently.
10198 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
10199 combination of a flag and a thread ID variable.
10200 Otherwise while one thread is in ssleay_rand_bytes (which sets the
10201 flag), *other* threads can enter ssleay_add_bytes without obeying
10202 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
10203 that they do not hold after the first thread unsets add_do_not_lock).
10206 *) Change bctest again: '-x' expressions are not available in all
10207 versions of 'test'.
10210 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
10212 *) Fix a couple of memory leaks in PKCS7_dataDecode()
10213 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
10215 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
10216 the default extension for executables, if any. Also, make the perl
10217 scripts that use symlink() to test if it really exists and use "cp"
10218 if it doesn't. All this made OpenSSL compilable and installable in
10222 *) Fix for asn1_GetSequence() for indefinite length constructed data.
10223 If SEQUENCE is length is indefinite just set c->slen to the total
10224 amount of data available.
10225 [Steve Henson, reported by shige@FreeBSD.org]
10226 [This change does not apply to 0.9.7.]
10228 *) Change bctest to avoid here-documents inside command substitution
10229 (workaround for FreeBSD /bin/sh bug).
10230 For compatibility with Ultrix, avoid shell functions (introduced
10231 in the bctest version that searches along $PATH).
10234 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
10235 with des_encrypt() defined on some operating systems, like Solaris
10239 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
10240 On the Importance of Eliminating Errors in Cryptographic
10241 Computations, J. Cryptology 14 (2001) 2, 101-119,
10242 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
10245 *) MIPS assembler BIGNUM division bug fix.
10248 *) Disabled incorrect Alpha assembler code.
10251 *) Fix PKCS#7 decode routines so they correctly update the length
10252 after reading an EOC for the EXPLICIT tag.
10254 [This change does not apply to 0.9.7.]
10256 *) Fix bug in PKCS#12 key generation routines. This was triggered
10257 if a 3DES key was generated with a 0 initial byte. Include
10258 PKCS12_BROKEN_KEYGEN compilation option to retain the old
10259 (but broken) behaviour.
10262 *) Enhance bctest to search for a working bc along $PATH and print
10264 [Tim Rice <tim@multitalents.net> via Richard Levitte]
10266 *) Fix memory leaks in err.c: free err_data string if necessary;
10267 don't write to the wrong index in ERR_set_error_data.
10270 *) Implement ssl23_peek (analogous to ssl23_read), which previously
10274 *) Replace rdtsc with _emit statements for VC++ version 5.
10275 [Jeremy Cooper <jeremy@baymoo.org>]
10277 *) Make it possible to reuse SSLv2 sessions.
10280 *) In copy_email() check for >= 0 as a return value for
10281 X509_NAME_get_index_by_NID() since 0 is a valid index.
10282 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
10284 *) Avoid coredump with unsupported or invalid public keys by checking if
10285 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
10286 PKCS7_verify() fails with non detached data.
10289 *) Don't use getenv in library functions when run as setuid/setgid.
10290 New function OPENSSL_issetugid().
10293 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
10294 due to incorrect handling of multi-threading:
10296 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
10298 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
10300 3. Count how many times MemCheck_off() has been called so that
10301 nested use can be treated correctly. This also avoids
10302 inband-signalling in the previous code (which relied on the
10303 assumption that thread ID 0 is impossible).
10306 *) Add "-rand" option also to s_client and s_server.
10309 *) Fix CPU detection on Irix 6.x.
10310 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
10311 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10313 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
10316 [This change does not apply to 0.9.7.]
10318 *) Use the cached encoding of an X509_NAME structure rather than
10319 copying it. This is apparently the reason for the libsafe "errors"
10320 but the code is actually correct.
10323 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
10324 Bleichenbacher's DSA attack.
10325 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
10326 to be set and top=0 forces the highest bit to be set; top=-1 is new
10327 and leaves the highest bit random.
10328 [Ulf Moeller, Bodo Moeller]
10330 *) In the NCONF_...-based implementations for CONF_... queries
10331 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
10332 a temporary CONF structure with the data component set to NULL
10333 (which gives segmentation faults in lh_retrieve).
10334 Instead, use NULL for the CONF pointer in CONF_get_string and
10335 CONF_get_number (which may use environment variables) and directly
10336 return NULL from CONF_get_section.
10339 *) Fix potential buffer overrun for EBCDIC.
10342 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
10343 keyUsage if basicConstraints absent for a CA.
10346 *) Make SMIME_write_PKCS7() write mail header values with a format that
10347 is more generally accepted (no spaces before the semicolon), since
10348 some programs can't parse those values properly otherwise. Also make
10349 sure BIO's that break lines after each write do not create invalid
10353 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
10354 macros previously used would not encode an empty SEQUENCE OF
10355 and break the signature.
10357 [This change does not apply to 0.9.7.]
10359 *) Zero the premaster secret after deriving the master secret in
10363 *) Add some EVP_add_digest_alias registrations (as found in
10364 OpenSSL_add_all_digests()) to SSL_library_init()
10365 aka OpenSSL_add_ssl_algorithms(). This provides improved
10366 compatibility with peers using X.509 certificates
10367 with unconventional AlgorithmIdentifier OIDs.
10370 *) Fix for Irix with NO_ASM.
10371 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10373 *) ./config script fixes.
10374 [Ulf Moeller, Richard Levitte]
10376 *) Fix 'openssl passwd -1'.
10379 *) Change PKCS12_key_gen_asc() so it can cope with non null
10380 terminated strings whose length is passed in the passlen
10381 parameter, for example from PEM callbacks. This was done
10382 by adding an extra length parameter to asc2uni().
10383 [Steve Henson, reported by <oddissey@samsung.co.kr>]
10385 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
10386 call failed, free the DSA structure.
10389 *) Fix to uni2asc() to cope with zero length Unicode strings.
10390 These are present in some PKCS#12 files.
10393 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
10394 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
10395 when writing a 32767 byte record.
10396 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
10398 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
10399 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
10401 (RSA objects have a reference count access to which is protected
10402 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
10403 so they are meant to be shared between threads.)
10404 [Bodo Moeller, Geoff Thorpe; original patch submitted by
10405 "Reddie, Steven" <Steven.Reddie@ca.com>]
10407 *) Fix a deadlock in CRYPTO_mem_leaks().
10410 *) Use better test patterns in bntest.
10413 *) rand_win.c fix for Borland C.
10416 *) BN_rshift bugfix for n == 0.
10419 *) Add a 'bctest' script that checks for some known 'bc' bugs
10420 so that 'make test' does not abort just because 'bc' is broken.
10423 *) Store verify_result within SSL_SESSION also for client side to
10424 avoid potential security hole. (Re-used sessions on the client side
10425 always resulted in verify_result==X509_V_OK, not using the original
10426 result of the server certificate verification.)
10429 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
10430 SSL3_RT_APPLICATION_DATA, return 0.
10431 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
10435 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
10436 releases, have been re-implemented by renaming the previous
10437 implementations of ssl2_read and ssl3_read to ssl2_read_internal
10438 and ssl3_read_internal, respectively, and adding 'peek' parameters
10439 to them. The new ssl[23]_{read,peek} functions are calls to
10440 ssl[23]_read_internal with the 'peek' flag set appropriately.
10441 A 'peek' parameter has also been added to ssl3_read_bytes, which
10442 does the actual work for ssl3_read_internal.
10445 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
10446 the method-specific "init()" handler. Also clean up ex_data after
10447 calling the method-specific "finish()" handler. Previously, this was
10448 happening the other way round.
10451 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
10452 The previous value, 12, was not always sufficient for BN_mod_exp().
10455 *) Make sure that shared libraries get the internal name engine with
10456 the full version number and not just 0. This should mark the
10457 shared libraries as not backward compatible. Of course, this should
10458 be changed again when we can guarantee backward binary compatibility.
10461 *) Fix typo in get_cert_by_subject() in by_dir.c
10462 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
10464 *) Rework the system to generate shared libraries:
10466 - Make note of the expected extension for the shared libraries and
10467 if there is a need for symbolic links from for example libcrypto.so.0
10468 to libcrypto.so.0.9.7. There is extended info in Configure for
10471 - Make as few rebuilds of the shared libraries as possible.
10473 - Still avoid linking the OpenSSL programs with the shared libraries.
10475 - When installing, install the shared libraries separately from the
10479 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
10481 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
10482 and not in SSL_clear because the latter is also used by the
10483 accept/connect functions; previously, the settings made by
10484 SSL_set_read_ahead would be lost during the handshake.
10485 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10487 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10488 Previously, it would create entries for disabled algorithms no
10492 *) Added several new manual pages for SSL_* function.
10495 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10497 *) In ssl23_get_client_hello, generate an error message when faced
10498 with an initial SSL 3.0/TLS record that is too small to contain the
10499 first two bytes of the ClientHello message, i.e. client_version.
10500 (Note that this is a pathologic case that probably has never happened
10501 in real life.) The previous approach was to use the version number
10502 from the record header as a substitute; but our protocol choice
10503 should not depend on that one because it is not authenticated
10504 by the Finished messages.
10507 *) More robust randomness gathering functions for Windows.
10508 [Jeffrey Altman <jaltman@columbia.edu>]
10510 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10511 not set then we don't setup the error code for issuer check errors
10512 to avoid possibly overwriting other errors which the callback does
10513 handle. If an application does set the flag then we assume it knows
10514 what it is doing and can handle the new informational codes
10518 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10519 a general "ANY" type, as such it should be able to decode anything
10520 including tagged types. However it didn't check the class so it would
10521 wrongly interpret tagged types in the same way as their universal
10522 counterpart and unknown types were just rejected. Changed so that the
10523 tagged and unknown types are handled in the same way as a SEQUENCE:
10524 that is the encoding is stored intact. There is also a new type
10525 "V_ASN1_OTHER" which is used when the class is not universal, in this
10526 case we have no idea what the actual type is so we just lump them all
10530 *) On VMS, stdout may very well lead to a file that is written to
10531 in a record-oriented fashion. That means that every write() will
10532 write a separate record, which will be read separately by the
10533 programs trying to read from it. This can be very confusing.
10535 The solution is to put a BIO filter in the way that will buffer
10536 text until a linefeed is reached, and then write everything a
10537 line at a time, so every record written will be an actual line,
10538 not chunks of lines and not (usually doesn't happen, but I've
10539 seen it once) several lines in one record. BIO_f_linebuffer() is
10542 Currently, it's a VMS-only method, because that's where it has
10543 been tested well enough.
10546 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10547 it can return incorrect results.
10548 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10549 but it was in 0.9.6-beta[12].)
10552 *) Disable the check for content being present when verifying detached
10553 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10554 include zero length content when signing messages.
10557 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10558 BIO_ctrl (for BIO pairs).
10561 *) Add DSO method for VMS.
10564 *) Bug fix: Montgomery multiplication could produce results with the
10568 *) Add RPM specification openssl.spec and modify it to build three
10569 packages. The default package contains applications, application
10570 documentation and run-time libraries. The devel package contains
10571 include files, static libraries and function documentation. The
10572 doc package contains the contents of the doc directory. The original
10573 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10576 *) Add a large number of documentation files for many SSL routines.
10577 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10579 *) Add a configuration entry for Sony News 4.
10580 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10582 *) Don't set the two most significant bits to one when generating a
10583 random number < q in the DSA library.
10586 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10587 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10588 the underlying transport is blocking) if a handshake took place.
10589 (The default behaviour is needed by applications such as s_client
10590 and s_server that use select() to determine when to use SSL_read;
10591 but for applications that know in advance when to expect data, it
10592 just makes things more complicated.)
10595 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10599 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10600 work better on such systems.
10601 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10603 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10604 Update PKCS12_parse() so it copies the friendlyName and the
10605 keyid to the certificates aux info.
10608 *) Fix bug in PKCS7_verify() which caused an infinite loop
10609 if there was more than one signature.
10610 [Sven Uszpelkat <su@celocom.de>]
10612 *) Major change in util/mkdef.pl to include extra information
10613 about each symbol, as well as presenting variables as well
10614 as functions. This change means that there's n more need
10615 to rebuild the .num files when some algorithms are excluded.
10618 *) Allow the verify time to be set by an application,
10619 rather than always using the current time.
10622 *) Phase 2 verify code reorganisation. The certificate
10623 verify code now looks up an issuer certificate by a
10624 number of criteria: subject name, authority key id
10625 and key usage. It also verifies self signed certificates
10626 by the same criteria. The main comparison function is
10627 X509_check_issued() which performs these checks.
10629 Lot of changes were necessary in order to support this
10630 without completely rewriting the lookup code.
10632 Authority and subject key identifier are now cached.
10634 The LHASH 'certs' is X509_STORE has now been replaced
10635 by a STACK_OF(X509_OBJECT). This is mainly because an
10636 LHASH can't store or retrieve multiple objects with
10637 the same hash value.
10639 As a result various functions (which were all internal
10640 use only) have changed to handle the new X509_STORE
10641 structure. This will break anything that messed round
10642 with X509_STORE internally.
10644 The functions X509_STORE_add_cert() now checks for an
10645 exact match, rather than just subject name.
10647 The X509_STORE API doesn't directly support the retrieval
10648 of multiple certificates matching a given criteria, however
10649 this can be worked round by performing a lookup first
10650 (which will fill the cache with candidate certificates)
10651 and then examining the cache for matches. This is probably
10652 the best we can do without throwing out X509_LOOKUP
10653 entirely (maybe later...).
10655 The X509_VERIFY_CTX structure has been enhanced considerably.
10657 All certificate lookup operations now go via a get_issuer()
10658 callback. Although this currently uses an X509_STORE it
10659 can be replaced by custom lookups. This is a simple way
10660 to bypass the X509_STORE hackery necessary to make this
10661 work and makes it possible to use more efficient techniques
10662 in future. A very simple version which uses a simple
10663 STACK for its trusted certificate store is also provided
10664 using X509_STORE_CTX_trusted_stack().
10666 The verify_cb() and verify() callbacks now have equivalents
10667 in the X509_STORE_CTX structure.
10669 X509_STORE_CTX also has a 'flags' field which can be used
10670 to customise the verify behaviour.
10673 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10674 excludes S/MIME capabilities.
10677 *) When a certificate request is read in keep a copy of the
10678 original encoding of the signed data and use it when outputting
10679 again. Signatures then use the original encoding rather than
10680 a decoded, encoded version which may cause problems if the
10681 request is improperly encoded.
10684 *) For consistency with other BIO_puts implementations, call
10685 buffer_write(b, ...) directly in buffer_puts instead of calling
10688 In BIO_puts, increment b->num_write as in BIO_write.
10689 [Peter.Sylvester@EdelWeb.fr]
10691 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10692 BN_zero, we may not return a BIGNUM with an array consisting of
10693 words set to zero.)
10696 *) Avoid calling abort() from within the library when problems are
10697 detected, except if preprocessor symbols have been defined
10698 (such as REF_CHECK, BN_DEBUG etc.).
10701 *) New openssl application 'rsautl'. This utility can be
10702 used for low level RSA operations. DER public key
10703 BIO/fp routines also added.
10706 *) New Configure entry and patches for compiling on QNX 4.
10707 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10709 *) A demo state-machine implementation was sponsored by
10710 Nuron (http://www.nuron.com/) and is now available in
10711 demos/state_machine.
10714 *) New options added to the 'dgst' utility for signature
10715 generation and verification.
10718 *) Unrecognized PKCS#7 content types are now handled via a
10719 catch all ASN1_TYPE structure. This allows unsupported
10720 types to be stored as a "blob" and an application can
10721 encode and decode it manually.
10724 *) Fix various signed/unsigned issues to make a_strex.c
10725 compile under VC++.
10726 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10728 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10729 length if passed a buffer. ASN1_INTEGER_to_BN failed
10730 if passed a NULL BN and its argument was negative.
10731 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10733 *) Modification to PKCS#7 encoding routines to output definite
10734 length encoding. Since currently the whole structures are in
10735 memory there's not real point in using indefinite length
10736 constructed encoding. However if OpenSSL is compiled with
10737 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10740 *) Added BIO_vprintf() and BIO_vsnprintf().
10743 *) Added more prefixes to parse for in the strings written
10744 through a logging bio, to cover all the levels that are available
10745 through syslog. The prefixes are now:
10747 PANIC, EMERG, EMR => LOG_EMERG
10748 ALERT, ALR => LOG_ALERT
10749 CRIT, CRI => LOG_CRIT
10750 ERROR, ERR => LOG_ERR
10751 WARNING, WARN, WAR => LOG_WARNING
10752 NOTICE, NOTE, NOT => LOG_NOTICE
10753 INFO, INF => LOG_INFO
10754 DEBUG, DBG => LOG_DEBUG
10756 and as before, if none of those prefixes are present at the
10757 beginning of the string, LOG_ERR is chosen.
10759 On Win32, the LOG_* levels are mapped according to this:
10761 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10762 LOG_WARNING => EVENTLOG_WARNING_TYPE
10763 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10767 *) Made it possible to reconfigure with just the configuration
10768 argument "reconf" or "reconfigure". The command line arguments
10769 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10770 and are retrieved from there when reconfiguring.
10773 *) MD4 implemented.
10774 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10776 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10779 *) The obj_dat.pl script was messing up the sorting of object
10780 names. The reason was that it compared the quoted version
10781 of strings as a result "OCSP" > "OCSP Signing" because
10782 " > SPACE. Changed script to store unquoted versions of
10783 names and add quotes on output. It was also omitting some
10784 names from the lookup table if they were given a default
10785 value (that is if SN is missing it is given the same
10786 value as LN and vice versa), these are now added on the
10787 grounds that if an object has a name we should be able to
10788 look it up. Finally added warning output when duplicate
10789 short or long names are found.
10792 *) Changes needed for Tandem NSK.
10793 [Scott Uroff <scott@xypro.com>]
10795 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10796 RSA_padding_check_SSLv23(), special padding was never detected
10797 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10798 version rollback attacks was not effective.
10800 In s23_clnt.c, don't use special rollback-attack detection padding
10801 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10802 client; similarly, in s23_srvr.c, don't do the rollback check if
10803 SSL 2.0 is the only protocol enabled in the server.
10806 *) Make it possible to get hexdumps of unprintable data with 'openssl
10807 asn1parse'. By implication, the functions ASN1_parse_dump() and
10808 BIO_dump_indent() are added.
10811 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10812 these print out strings and name structures based on various
10813 flags including RFC2253 support and proper handling of
10814 multibyte characters. Added options to the 'x509' utility
10815 to allow the various flags to be set.
10818 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10819 Also change the functions X509_cmp_current_time() and
10820 X509_gmtime_adj() work with an ASN1_TIME structure,
10821 this will enable certificates using GeneralizedTime in validity
10822 dates to be checked.
10825 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10826 negative public key encodings) on by default,
10827 NO_NEG_PUBKEY_BUG can be set to disable it.
10830 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10831 content octets. An i2c_ASN1_OBJECT is unnecessary because
10832 the encoding can be trivially obtained from the structure.
10835 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10836 not read locks (CRYPTO_r_[un]lock).
10839 *) A first attempt at creating official support for shared
10840 libraries through configuration. I've kept it so the
10841 default is static libraries only, and the OpenSSL programs
10842 are always statically linked for now, but there are
10843 preparations for dynamic linking in place.
10844 This has been tested on Linux and Tru64.
10847 *) Randomness polling function for Win9x, as described in:
10848 Peter Gutmann, Software Generation of Practically Strong
10852 *) Fix so PRNG is seeded in req if using an already existing
10856 *) New options to smime application. -inform and -outform
10857 allow alternative formats for the S/MIME message including
10858 PEM and DER. The -content option allows the content to be
10859 specified separately. This should allow things like Netscape
10860 form signing output easier to verify.
10863 *) Fix the ASN1 encoding of tags using the 'long form'.
10866 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10867 STRING types. These convert content octets to and from the
10868 underlying type. The actual tag and length octets are
10869 already assumed to have been read in and checked. These
10870 are needed because all other string types have virtually
10871 identical handling apart from the tag. By having versions
10872 of the ASN1 functions that just operate on content octets
10873 IMPLICIT tagging can be handled properly. It also allows
10874 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10875 and ASN1_INTEGER are identical apart from the tag.
10878 *) Change the handling of OID objects as follows:
10880 - New object identifiers are inserted in objects.txt, following
10881 the syntax given in objects.README.
10882 - objects.pl is used to process obj_mac.num and create a new
10884 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10887 This is currently kind of a hack, and the perl code in objects.pl
10888 isn't very elegant, but it works as I intended. The simplest way
10889 to check that it worked correctly is to look in obj_dat.h and
10890 check the array nid_objs and make sure the objects haven't moved
10891 around (this is important!). Additions are OK, as well as
10892 consistent name changes.
10895 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10898 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10899 The given file adds to whatever has already been seeded into the
10900 random pool through the RANDFILE configuration file option or
10901 environment variable, or the default random state file.
10904 *) mkstack.pl now sorts each macro group into lexical order.
10905 Previously the output order depended on the order the files
10906 appeared in the directory, resulting in needless rewriting
10910 *) Patches to make OpenSSL compile under Win32 again. Mostly
10911 work arounds for the VC++ problem that it treats func() as
10912 func(void). Also stripped out the parts of mkdef.pl that
10913 added extra typesafe functions: these no longer exist.
10916 *) Reorganisation of the stack code. The macros are now all
10917 collected in safestack.h . Each macro is defined in terms of
10918 a "stack macro" of the form SKM_<name>(type, a, b). The
10919 DEBUG_SAFESTACK is now handled in terms of function casts,
10920 this has the advantage of retaining type safety without the
10921 use of additional functions. If DEBUG_SAFESTACK is not defined
10922 then the non typesafe macros are used instead. Also modified the
10923 mkstack.pl script to handle the new form. Needs testing to see
10924 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10925 the default if no major problems. Similar behaviour for ASN1_SET_OF
10926 and PKCS12_STACK_OF.
10929 *) When some versions of IIS use the 'NET' form of private key the
10930 key derivation algorithm is different. Normally MD5(password) is
10931 used as a 128 bit RC4 key. In the modified case
10932 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10933 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10934 as the old Netscape_RSA functions except they have an additional
10935 'sgckey' parameter which uses the modified algorithm. Also added
10936 an -sgckey command line option to the rsa utility. Thanks to
10937 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10938 algorithm to openssl-dev.
10941 *) The evp_local.h macros were using 'c.##kname' which resulted in
10942 invalid expansion on some systems (SCO 5.0.5 for example).
10943 Corrected to 'c.kname'.
10944 [Phillip Porch <root@theporch.com>]
10946 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10947 a STACK of email addresses from a certificate or request, these look
10948 in the subject name and the subject alternative name extensions and
10949 omit any duplicate addresses.
10952 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10953 This makes DSA verification about 2 % faster.
10956 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10957 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10958 plus overhead for 1024 bit moduli).
10959 This makes exponentiations about 0.5 % faster for 1024 bit
10960 exponents (as measured by "openssl speed rsa2048").
10963 *) Rename memory handling macros to avoid conflicts with other
10965 Malloc => OPENSSL_malloc
10966 Malloc_locked => OPENSSL_malloc_locked
10967 Realloc => OPENSSL_realloc
10968 Free => OPENSSL_free
10971 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10972 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10975 *) CygWin32 support.
10976 [John Jarvie <jjarvie@newsguy.com>]
10978 *) The type-safe stack code has been rejigged. It is now only compiled
10979 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10980 by default all type-specific stack functions are "#define"d back to
10981 standard stack functions. This results in more streamlined output
10982 but retains the type-safety checking possibilities of the original
10986 *) The STACK code has been cleaned up, and certain type declarations
10987 that didn't make a lot of sense have been brought in line. This has
10988 also involved a cleanup of sorts in safestack.h to more correctly
10989 map type-safe stack functions onto their plain stack counterparts.
10990 This work has also resulted in a variety of "const"ifications of
10991 lots of the code, especially "_cmp" operations which should normally
10992 be prototyped with "const" parameters anyway.
10995 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10996 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10997 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10998 where all of 'md' is used each time the PRNG is used, but 'state'
10999 is used only indexed by a cyclic counter. As entropy may not be
11000 well distributed from the beginning, 'md' is important as a
11001 chaining variable. However, the output function chains only half
11002 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
11003 all of 'md', and seeding with STATE_SIZE dummy bytes will result
11004 in all of 'state' being rewritten, with the new values depending
11005 on virtually all of 'md'. This overcomes the 80 bit limitation.)
11008 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
11009 the handshake is continued after ssl_verify_cert_chain();
11010 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
11011 can lead to 'unexplainable' connection aborts later.
11012 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
11014 *) Major EVP API cipher revision.
11015 Add hooks for extra EVP features. This allows various cipher
11016 parameters to be set in the EVP interface. Support added for variable
11017 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
11018 setting of RC2 and RC5 parameters.
11020 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
11023 Remove lots of duplicated code from the EVP library. For example *every*
11024 cipher init() function handles the 'iv' in the same way according to the
11025 cipher mode. They also all do nothing if the 'key' parameter is NULL and
11026 for CFB and OFB modes they zero ctx->num.
11028 New functionality allows removal of S/MIME code RC2 hack.
11030 Most of the routines have the same form and so can be declared in terms
11033 By shifting this to the top level EVP_CipherInit() it can be removed from
11034 all individual ciphers. If the cipher wants to handle IVs or keys
11035 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
11038 Change lots of functions like EVP_EncryptUpdate() to now return a
11039 value: although software versions of the algorithms cannot fail
11040 any installed hardware versions can.
11043 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
11044 this option is set, tolerate broken clients that send the negotiated
11045 protocol version number instead of the requested protocol version
11049 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
11050 i.e. non-zero for export ciphersuites, zero otherwise.
11051 Previous versions had this flag inverted, inconsistent with
11052 rsa_tmp_cb (..._TMP_RSA_CB).
11053 [Bodo Moeller; problem reported by Amit Chopra]
11055 *) Add missing DSA library text string. Work around for some IIS
11056 key files with invalid SEQUENCE encoding.
11059 *) Add a document (doc/standards.txt) that list all kinds of standards
11060 and so on that are implemented in OpenSSL.
11063 *) Enhance c_rehash script. Old version would mishandle certificates
11064 with the same subject name hash and wouldn't handle CRLs at all.
11065 Added -fingerprint option to crl utility, to support new c_rehash
11069 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
11072 *) Fix for SSL server purpose checking. Server checking was
11073 rejecting certificates which had extended key usage present
11074 but no ssl client purpose.
11075 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
11077 *) Make PKCS#12 code work with no password. The PKCS#12 spec
11078 is a little unclear about how a blank password is handled.
11079 Since the password in encoded as a BMPString with terminating
11080 double NULL a zero length password would end up as just the
11081 double NULL. However no password at all is different and is
11082 handled differently in the PKCS#12 key generation code. NS
11083 treats a blank password as zero length. MSIE treats it as no
11084 password on export: but it will try both on import. We now do
11085 the same: PKCS12_parse() tries zero length and no password if
11086 the password is set to "" or NULL (NULL is now a valid password:
11087 it wasn't before) as does the pkcs12 application.
11090 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
11091 perror when PEM_read_bio_X509_REQ fails, the error message must
11092 be obtained from the error queue.
11095 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
11096 it in ERR_remove_state if appropriate, and change ERR_get_state
11097 accordingly to avoid race conditions (this is necessary because
11098 thread_hash is no longer constant once set).
11101 *) Bugfix for linux-elf makefile.one.
11104 *) RSA_get_default_method() will now cause a default
11105 RSA_METHOD to be chosen if one doesn't exist already.
11106 Previously this was only set during a call to RSA_new()
11107 or RSA_new_method(NULL) meaning it was possible for
11108 RSA_get_default_method() to return NULL.
11111 *) Added native name translation to the existing DSO code
11112 that will convert (if the flag to do so is set) filenames
11113 that are sufficiently small and have no path information
11114 into a canonical native form. Eg. "blah" converted to
11115 "libblah.so" or "blah.dll" etc.
11118 *) New function ERR_error_string_n(e, buf, len) which is like
11119 ERR_error_string(e, buf), but writes at most 'len' bytes
11120 including the 0 terminator. For ERR_error_string_n, 'buf'
11122 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
11124 *) CONF library reworked to become more general. A new CONF
11125 configuration file reader "class" is implemented as well as a
11126 new functions (NCONF_*, for "New CONF") to handle it. The now
11127 old CONF_* functions are still there, but are reimplemented to
11128 work in terms of the new functions. Also, a set of functions
11129 to handle the internal storage of the configuration data is
11130 provided to make it easier to write new configuration file
11131 reader "classes" (I can definitely see something reading a
11132 configuration file in XML format, for example), called _CONF_*,
11133 or "the configuration storage API"...
11135 The new configuration file reading functions are:
11137 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
11138 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
11140 NCONF_default, NCONF_WIN32
11142 NCONF_dump_fp, NCONF_dump_bio
11144 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
11145 NCONF_new creates a new CONF object. This works in the same way
11146 as other interfaces in OpenSSL, like the BIO interface.
11147 NCONF_dump_* dump the internal storage of the configuration file,
11148 which is useful for debugging. All other functions take the same
11149 arguments as the old CONF_* functions with the exception of the
11150 first that must be a `CONF *' instead of a `LHASH *'.
11152 To make it easier to use the new classes with the old CONF_* functions,
11153 the function CONF_set_default_method is provided.
11156 *) Add '-tls1' option to 'openssl ciphers', which was already
11157 mentioned in the documentation but had not been implemented.
11158 (This option is not yet really useful because even the additional
11159 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
11162 *) Initial DSO code added into libcrypto for letting OpenSSL (and
11163 OpenSSL-based applications) load shared libraries and bind to
11164 them in a portable way.
11165 [Geoff Thorpe, with contributions from Richard Levitte]
11167 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
11169 *) Make sure _lrotl and _lrotr are only used with MSVC.
11171 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
11172 (the default implementation of RAND_status).
11174 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
11175 to '-clrext' (= clear extensions), as intended and documented.
11176 [Bodo Moeller; inconsistency pointed out by Michael Attili
11177 <attili@amaxo.com>]
11179 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
11180 was larger than the MD block size.
11181 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
11183 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
11184 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
11185 using the passed key: if the passed key was a private key the result
11186 of X509_print(), for example, would be to print out all the private key
11190 *) des_quad_cksum() byte order bug fix.
11191 [Ulf Möller, using the problem description in krb4-0.9.7, where
11192 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
11194 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
11196 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
11198 *) For easily testing in shell scripts whether some command
11199 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
11200 returns with exit code 0 iff no command of the given name is available.
11201 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
11202 the output goes to stdout and nothing is printed to stderr.
11203 Additional arguments are always ignored.
11205 Since for each cipher there is a command of the same name,
11206 the 'no-cipher' compilation switches can be tested this way.
11208 ('openssl no-XXX' is not able to detect pseudo-commands such
11209 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
11212 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
11215 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
11216 is set; it will be thrown away anyway because each handshake creates
11218 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
11219 to parameters -- in previous versions (since OpenSSL 0.9.3) the
11220 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
11221 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
11224 *) New s_client option -ign_eof: EOF at stdin is ignored, and
11225 'Q' and 'R' lose their special meanings (quit/renegotiate).
11226 This is part of what -quiet does; unlike -quiet, -ign_eof
11227 does not suppress any output.
11230 *) Add compatibility options to the purpose and trust code. The
11231 purpose X509_PURPOSE_ANY is "any purpose" which automatically
11232 accepts a certificate or CA, this was the previous behaviour,
11233 with all the associated security issues.
11235 X509_TRUST_COMPAT is the old trust behaviour: only and
11236 automatically trust self signed roots in certificate store. A
11237 new trust setting X509_TRUST_DEFAULT is used to specify that
11238 a purpose has no associated trust setting and it should instead
11239 use the value in the default purpose.
11242 *) Fix the PKCS#8 DSA private key code so it decodes keys again
11243 and fix a memory leak.
11246 *) In util/mkerr.pl (which implements 'make errors'), preserve
11247 reason strings from the previous version of the .c file, as
11248 the default to have only downcase letters (and digits) in
11249 automatically generated reasons codes is not always appropriate.
11252 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
11253 using strerror. Previously, ERR_reason_error_string() returned
11254 library names as reason strings for SYSerr; but SYSerr is a special
11255 case where small numbers are errno values, not library numbers.
11258 *) Add '-dsaparam' option to 'openssl dhparam' application. This
11259 converts DSA parameters into DH parameters. (When creating parameters,
11260 DSA_generate_parameters is used.)
11263 *) Include 'length' (recommended exponent length) in C code generated
11264 by 'openssl dhparam -C'.
11267 *) The second argument to set_label in perlasm was already being used
11268 so couldn't be used as a "file scope" flag. Moved to third argument
11272 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
11273 instead of RAND_bytes for encryption IVs and salts.
11276 *) Include RAND_status() into RAND_METHOD instead of implementing
11277 it only for md_rand.c Otherwise replacing the PRNG by calling
11278 RAND_set_rand_method would be impossible.
11281 *) Don't let DSA_generate_key() enter an infinite loop if the random
11282 number generation fails.
11285 *) New 'rand' application for creating pseudo-random output.
11288 *) Added configuration support for Linux/IA64
11289 [Rolf Haberrecker <rolf@suse.de>]
11291 *) Assembler module support for Mingw32.
11294 *) Shared library support for HPUX (in shlib/).
11295 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
11297 *) Shared library support for Solaris gcc.
11298 [Lutz Behnke <behnke@trustcenter.de>]
11300 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
11302 *) PKCS7_encrypt() was adding text MIME headers twice because they
11303 were added manually and by SMIME_crlf_copy().
11306 *) In bntest.c don't call BN_rand with zero bits argument.
11307 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
11309 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
11310 case was implemented. This caused BN_div_recp() to fail occasionally.
11313 *) Add an optional second argument to the set_label() in the perl
11314 assembly language builder. If this argument exists and is set
11315 to 1 it signals that the assembler should use a symbol whose
11316 scope is the entire file, not just the current function. This
11317 is needed with MASM which uses the format label:: for this scope.
11318 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
11320 *) Change the ASN1 types so they are typedefs by default. Before
11321 almost all types were #define'd to ASN1_STRING which was causing
11322 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
11326 *) Change names of new functions to the new get1/get0 naming
11327 convention: After 'get1', the caller owns a reference count
11328 and has to call ..._free; 'get0' returns a pointer to some
11329 data structure without incrementing reference counters.
11330 (Some of the existing 'get' functions increment a reference
11331 counter, some don't.)
11332 Similarly, 'set1' and 'add1' functions increase reference
11333 counters or duplicate objects.
11336 *) Allow for the possibility of temp RSA key generation failure:
11337 the code used to assume it always worked and crashed on failure.
11340 *) Fix potential buffer overrun problem in BIO_printf().
11341 [Ulf Möller, using public domain code by Patrick Powell; problem
11342 pointed out by David Sacerdote <das33@cornell.edu>]
11344 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
11345 RAND_egd() and RAND_status(). In the command line application,
11346 the EGD socket can be specified like a seed file using RANDFILE
11350 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
11351 Some CAs (e.g. Verisign) distribute certificates in this form.
11354 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
11355 list to exclude them. This means that no special compilation option
11356 is needed to use anonymous DH: it just needs to be included in the
11360 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
11361 EVP_MD_type. The old functionality is available in a new macro called
11362 EVP_MD_md(). Change code that uses it and update docs.
11365 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
11366 where the 'void *' argument is replaced by a function pointer argument.
11367 Previously 'void *' was abused to point to functions, which works on
11368 many platforms, but is not correct. As these functions are usually
11369 called by macros defined in OpenSSL header files, most source code
11370 should work without changes.
11373 *) <openssl/opensslconf.h> (which is created by Configure) now contains
11374 sections with information on -D... compiler switches used for
11375 compiling the library so that applications can see them. To enable
11376 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
11377 must be defined. E.g.,
11378 #define OPENSSL_ALGORITHM_DEFINES
11379 #include <openssl/opensslconf.h>
11380 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
11381 [Richard Levitte, Ulf and Bodo Möller]
11383 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
11387 *) Change the 'other' type in certificate aux info to a STACK_OF
11388 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
11389 the required ASN1 format: arbitrary types determined by an OID.
11392 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
11393 argument to 'req'. This is not because the function is newer or
11394 better than others it just uses the work 'NEW' in the certificate
11395 request header lines. Some software needs this.
11398 *) Reorganise password command line arguments: now passwords can be
11399 obtained from various sources. Delete the PEM_cb function and make
11400 it the default behaviour: i.e. if the callback is NULL and the
11401 usrdata argument is not NULL interpret it as a null terminated pass
11402 phrase. If usrdata and the callback are NULL then the pass phrase
11403 is prompted for as usual.
11406 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
11407 the support is automatically enabled. The resulting binaries will
11408 autodetect the card and use it if present.
11409 [Ben Laurie and Compaq Inc.]
11411 *) Work around for Netscape hang bug. This sends certificate request
11412 and server done in one record. Since this is perfectly legal in the
11413 SSL/TLS protocol it isn't a "bug" option and is on by default. See
11414 the bugs/SSLv3 entry for more info.
11417 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
11420 *) Add -rand argument to smime and pkcs12 applications and read/write
11424 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
11427 *) Add command line password options to the remaining applications.
11430 *) Bug fix for BN_div_recp() for numerators with an even number of
11434 *) More tests in bntest.c, and changed test_bn output.
11437 *) ./config recognizes MacOS X now.
11440 *) Bug fix for BN_div() when the first words of num and divisor are
11441 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
11444 *) Add support for various broken PKCS#8 formats, and command line
11445 options to produce them.
11448 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
11449 get temporary BIGNUMs from a BN_CTX.
11452 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
11456 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
11457 include a #define from the old name to the new. The original intent
11458 was that statically linked binaries could for example just call
11459 SSLeay_add_all_ciphers() to just add ciphers to the table and not
11460 link with digests. This never worked because SSLeay_add_all_digests()
11461 and SSLeay_add_all_ciphers() were in the same source file so calling
11462 one would link with the other. They are now in separate source files.
11465 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
11468 *) Use a less unusual form of the Miller-Rabin primality test (it used
11469 a binary algorithm for exponentiation integrated into the Miller-Rabin
11470 loop, our standard modexp algorithms are faster).
11473 *) Support for the EBCDIC character set completed.
11474 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
11476 *) Source code cleanups: use const where appropriate, eliminate casts,
11477 use void * instead of char * in lhash.
11480 *) Bugfix: ssl3_send_server_key_exchange was not restartable
11481 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
11482 this the server could overwrite ephemeral keys that the client
11486 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11487 using 50 iterations of the Rabin-Miller test.
11489 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11490 iterations of the Rabin-Miller test as required by the appendix
11491 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11492 As BN_is_prime_fasttest includes trial division, DSA parameter
11493 generation becomes much faster.
11495 This implies a change for the callback functions in DSA_is_prime
11496 and DSA_generate_parameters: The callback function is called once
11497 for each positive witness in the Rabin-Miller test, not just
11498 occasionally in the inner loop; and the parameters to the
11499 callback function now provide an iteration count for the outer
11500 loop rather than for the current invocation of the inner loop.
11501 DSA_generate_parameters additionally can call the callback
11502 function with an 'iteration count' of -1, meaning that a
11503 candidate has passed the trial division test (when q is generated
11504 from an application-provided seed, trial division is skipped).
11507 *) New function BN_is_prime_fasttest that optionally does trial
11508 division before starting the Rabin-Miller test and has
11509 an additional BN_CTX * argument (whereas BN_is_prime always
11510 has to allocate at least one BN_CTX).
11511 'callback(1, -1, cb_arg)' is called when a number has passed the
11512 trial division stage.
11515 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11519 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11522 *) New function BN_pseudo_rand().
11525 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11526 bignum version of BN_from_montgomery() with the working code from
11527 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11531 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11532 made it impossible to use the same SSL_SESSION data structure in
11533 SSL2 clients in multiple threads.
11536 *) The return value of RAND_load_file() no longer counts bytes obtained
11537 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11538 to seed the PRNG (previously an explicit byte count was required).
11539 [Ulf Möller, Bodo Möller]
11541 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11542 used (char *) instead of (void *) and had casts all over the place.
11545 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11548 *) Retain source code compatibility for BN_prime_checks macro:
11549 BN_is_prime(..., BN_prime_checks, ...) now uses
11550 BN_prime_checks_for_size to determine the appropriate number of
11551 Rabin-Miller iterations.
11554 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11555 DH_CHECK_P_NOT_SAFE_PRIME.
11556 (Check if this is true? OpenPGP calls them "strong".)
11559 *) Merge the functionality of "dh" and "gendh" programs into a new program
11560 "dhparam". The old programs are retained for now but will handle DH keys
11561 (instead of parameters) in future.
11564 *) Make the ciphers, s_server and s_client programs check the return values
11565 when a new cipher list is set.
11568 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11569 ciphers. Before when the 56bit ciphers were enabled the sorting was
11572 The syntax for the cipher sorting has been extended to support sorting by
11573 cipher-strength (using the strength_bits hard coded in the tables).
11574 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11576 Fix a bug in the cipher-command parser: when supplying a cipher command
11577 string with an "undefined" symbol (neither command nor alphanumeric
11578 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11579 an error is flagged.
11581 Due to the strength-sorting extension, the code of the
11582 ssl_create_cipher_list() function was completely rearranged. I hope that
11583 the readability was also increased :-)
11584 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11586 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11587 for the first serial number and places 2 in the serial number file. This
11588 avoids problems when the root CA is created with serial number zero and
11589 the first user certificate has the same issuer name and serial number
11593 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11594 the new code. Add documentation for this stuff.
11597 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11598 X509_*() to X509at_*() on the grounds that they don't handle X509
11599 structures and behave in an analogous way to the X509v3 functions:
11600 they shouldn't be called directly but wrapper functions should be used
11603 So we also now have some wrapper functions that call the X509at functions
11604 when passed certificate requests. (TO DO: similar things can be done with
11605 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11606 things. Some of these need some d2i or i2d and print functionality
11607 because they handle more complex structures.)
11610 *) Add missing #ifndefs that caused missing symbols when building libssl
11611 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11612 NO_RSA in ssl/s2*.c.
11613 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11615 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11616 has a return value which indicates the quality of the random data
11617 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11618 error queue. New function RAND_pseudo_bytes() generates output that is
11619 guaranteed to be unique but not unpredictable. RAND_add is like
11620 RAND_seed, but takes an extra argument for an entropy estimate
11621 (RAND_seed always assumes full entropy).
11624 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11625 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11626 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11627 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11628 false-positive rate of at most 2^-80 for random input.
11631 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11634 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11635 in the 0.9.5 release), this returns the chain
11636 from an X509_CTX structure with a dup of the stack and all
11637 the X509 reference counts upped: so the stack will exist
11638 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11641 Also make SSL_SESSION_print() print out the verify return
11645 *) Add manpage for the pkcs12 command. Also change the default
11646 behaviour so MAC iteration counts are used unless the new
11647 -nomaciter option is used. This improves file security and
11648 only older versions of MSIE (4.0 for example) need it.
11651 *) Honor the no-xxx Configure options when creating .DEF files.
11654 *) Add PKCS#10 attributes to field table: challengePassword,
11655 unstructuredName and unstructuredAddress. These are taken from
11656 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11657 international characters are used.
11659 More changes to X509_ATTRIBUTE code: allow the setting of types
11660 based on strings. Remove the 'loc' parameter when adding
11661 attributes because these will be a SET OF encoding which is sorted
11665 *) Initial changes to the 'req' utility to allow request generation
11666 automation. This will allow an application to just generate a template
11667 file containing all the field values and have req construct the
11670 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11671 used all over the place including certificate requests and PKCS#7
11672 structures. They are currently handled manually where necessary with
11673 some primitive wrappers for PKCS#7. The new functions behave in a
11674 manner analogous to the X509 extension functions: they allow
11675 attributes to be looked up by NID and added.
11677 Later something similar to the X509V3 code would be desirable to
11678 automatically handle the encoding, decoding and printing of the
11679 more complex types. The string types like challengePassword can
11680 be handled by the string table functions.
11682 Also modified the multi byte string table handling. Now there is
11683 a 'global mask' which masks out certain types. The table itself
11684 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11685 is useful when for example there is only one permissible type
11686 (as in countryName) and using the mask might result in no valid
11690 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11691 SSL_get_peer_finished to allow applications to obtain the latest
11692 Finished messages sent to the peer or expected from the peer,
11693 respectively. (SSL_get_peer_finished is usually the Finished message
11694 actually received from the peer, otherwise the protocol will be aborted.)
11696 As the Finished message are message digests of the complete handshake
11697 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11698 be used for external authentication procedures when the authentication
11699 provided by SSL/TLS is not desired or is not enough.
11702 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11703 the host supports BWX extension and if Compaq C is present on the
11704 $PATH. Just exploiting of the BWX extension results in 20-30%
11705 performance kick for some algorithms, e.g. DES and RC4 to mention
11706 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11710 *) Add support for MS "fast SGC". This is arguably a violation of the
11711 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11712 weak crypto and after checking the certificate is SGC a second one
11713 with strong crypto. MS SGC stops the first handshake after receiving
11714 the server certificate message and sends a second client hello. Since
11715 a server will typically do all the time consuming operations before
11716 expecting any further messages from the client (server key exchange
11717 is the most expensive) there is little difference between the two.
11719 To get OpenSSL to support MS SGC we have to permit a second client
11720 hello message after we have sent server done. In addition we have to
11721 reset the MAC if we do get this second client hello.
11724 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11725 if a DER encoded private key is RSA or DSA traditional format. Changed
11726 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11727 format DER encoded private key. Newer code should use PKCS#8 format which
11728 has the key type encoded in the ASN1 structure. Added DER private key
11729 support to pkcs8 application.
11732 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11733 ciphersuites has been selected (as required by the SSL 3/TLS 1
11734 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11735 is set, we interpret this as a request to violate the specification
11736 (the worst that can happen is a handshake failure, and 'correct'
11737 behaviour would result in a handshake failure anyway).
11740 *) In SSL_CTX_add_session, take into account that there might be multiple
11741 SSL_SESSION structures with the same session ID (e.g. when two threads
11742 concurrently obtain them from an external cache).
11743 The internal cache can handle only one SSL_SESSION with a given ID,
11744 so if there's a conflict, we now throw out the old one to achieve
11748 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11749 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11750 some routines that use cipher OIDs: some ciphers do not have OIDs
11751 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11755 *) Simplify the trust setting structure and code. Now we just have
11756 two sequences of OIDs for trusted and rejected settings. These will
11757 typically have values the same as the extended key usage extension
11758 and any application specific purposes.
11760 The trust checking code now has a default behaviour: it will just
11761 check for an object with the same NID as the passed id. Functions can
11762 be provided to override either the default behaviour or the behaviour
11763 for a given id. SSL client, server and email already have functions
11764 in place for compatibility: they check the NID and also return "trusted"
11765 if the certificate is self signed.
11768 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11769 traditional format into an EVP_PKEY structure.
11772 *) Add a password callback function PEM_cb() which either prompts for
11773 a password if usr_data is NULL or otherwise assumes it is a null
11774 terminated password. Allow passwords to be passed on command line
11775 environment or config files in a few more utilities.
11778 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11779 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11780 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11781 Update documentation.
11784 *) Support for ASN1 "NULL" type. This could be handled before by using
11785 ASN1_TYPE but there wasn't any function that would try to read a NULL
11786 and produce an error if it couldn't. For compatibility we also have
11787 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11788 don't allocate anything because they don't need to.
11791 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11793 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11795 *) Rebuild of the memory allocation routines used by OpenSSL code and
11796 possibly others as well. The purpose is to make an interface that
11797 provide hooks so anyone can build a separate set of allocation and
11798 deallocation routines to be used by OpenSSL, for example memory
11799 pool implementations, or something else, which was previously hard
11800 since Malloc(), Realloc() and Free() were defined as macros having
11801 the values malloc, realloc and free, respectively (except for Win32
11802 compilations). The same is provided for memory debugging code.
11803 OpenSSL already comes with functionality to find memory leaks, but
11804 this gives people a chance to debug other memory problems.
11806 With these changes, a new set of functions and macros have appeared:
11808 CRYPTO_set_mem_debug_functions() [F]
11809 CRYPTO_get_mem_debug_functions() [F]
11810 CRYPTO_dbg_set_options() [F]
11811 CRYPTO_dbg_get_options() [F]
11812 CRYPTO_malloc_debug_init() [M]
11814 The memory debug functions are NULL by default, unless the library
11815 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11816 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11817 gives the standard debugging functions that come with OpenSSL) or
11818 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11819 provided by the library user) must be used. When the standard
11820 debugging functions are used, CRYPTO_dbg_set_options can be used to
11821 request additional information:
11822 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11823 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11825 Also, things like CRYPTO_set_mem_functions will always give the
11826 expected result (the new set of functions is used for allocation
11827 and deallocation) at all times, regardless of platform and compiler
11830 To finish it up, some functions that were never use in any other
11831 way than through macros have a new API and new semantic:
11833 CRYPTO_dbg_malloc()
11834 CRYPTO_dbg_realloc()
11837 All macros of value have retained their old syntax.
11838 [Richard Levitte and Bodo Moeller]
11840 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11841 ordering of SMIMECapabilities wasn't in "strength order" and there
11842 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11846 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11847 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11848 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11850 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11851 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11852 functionality to handle multipart/signed properly) and a utility
11853 called 'smime' to call all this stuff. This is based on code I
11854 originally wrote for Celo who have kindly allowed it to be
11855 included in OpenSSL.
11858 *) Add variants des_set_key_checked and des_set_key_unchecked of
11859 des_set_key (aka des_key_sched). Global variable des_check_key
11860 decides which of these is called by des_set_key; this way
11861 des_check_key behaves as it always did, but applications and
11862 the library itself, which was buggy for des_check_key == 1,
11863 have a cleaner way to pick the version they need.
11866 *) New function PKCS12_newpass() which changes the password of a
11870 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11871 dynamic mix. In both cases the ids can be used as an index into the
11872 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11873 functions so they accept a list of the field values and the
11874 application doesn't need to directly manipulate the X509_TRUST
11878 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11882 *) Modify the way the V3 extension code looks up extensions. This now
11883 works in a similar way to the object code: we have some "standard"
11884 extensions in a static table which is searched with OBJ_bsearch()
11885 and the application can add dynamic ones if needed. The file
11886 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11887 updated whenever a new extension is added to the core code and kept
11888 in ext_nid order. There is a simple program 'tabtest.c' which checks
11889 this. New extensions are not added too often so this file can readily
11890 be maintained manually.
11892 There are two big advantages in doing things this way. The extensions
11893 can be looked up immediately and no longer need to be "added" using
11894 X509V3_add_standard_extensions(): this function now does nothing.
11895 [Side note: I get *lots* of email saying the extension code doesn't
11896 work because people forget to call this function]
11897 Also no dynamic allocation is done unless new extensions are added:
11898 so if we don't add custom extensions there is no need to call
11899 X509V3_EXT_cleanup().
11902 *) Modify enc utility's salting as follows: make salting the default. Add a
11903 magic header, so unsalted files fail gracefully instead of just decrypting
11904 to garbage. This is because not salting is a big security hole, so people
11905 should be discouraged from doing it.
11908 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11909 digest to be passed on the command line but it only used this
11910 parameter when signing a certificate. Modified so all relevant
11911 operations are affected by the digest parameter including the
11912 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11913 DSA key was used because it didn't fix the digest.
11916 *) Initial certificate chain verify code. Currently tests the untrusted
11917 certificates for consistency with the verify purpose (which is set
11918 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11920 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11921 this is because it will reject chains with invalid extensions whereas
11922 every previous version of OpenSSL and SSLeay made no checks at all.
11924 Trust code: checks the root CA for the relevant trust settings. Trust
11925 settings have an initial value consistent with the verify purpose: e.g.
11926 if the verify purpose is for SSL client use it expects the CA to be
11927 trusted for SSL client use. However the default value can be changed to
11928 permit custom trust settings: one example of this would be to only trust
11929 certificates from a specific "secure" set of CAs.
11931 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11932 which should be used for version portability: especially since the
11933 verify structure is likely to change more often now.
11935 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11936 to set them. If not set then assume SSL clients will verify SSL servers
11939 Two new options to the verify program: -untrusted allows a set of
11940 untrusted certificates to be passed in and -purpose which sets the
11941 intended purpose of the certificate. If a purpose is set then the
11942 new chain verify code is used to check extension consistency.
11945 *) Support for the authority information access extension.
11948 *) Modify RSA and DSA PEM read routines to transparently handle
11949 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11950 public keys in a format compatible with certificate
11951 SubjectPublicKeyInfo structures. Unfortunately there were already
11952 functions called *_PublicKey_* which used various odd formats so
11953 these are retained for compatibility: however the DSA variants were
11954 never in a public release so they have been deleted. Changed dsa/rsa
11955 utilities to handle the new format: note no releases ever handled public
11956 keys so we should be OK.
11958 The primary motivation for this change is to avoid the same fiasco
11959 that dogs private keys: there are several incompatible private key
11960 formats some of which are standard and some OpenSSL specific and
11961 require various evil hacks to allow partial transparent handling and
11962 even then it doesn't work with DER formats. Given the option anything
11963 other than PKCS#8 should be dumped: but the other formats have to
11964 stay in the name of compatibility.
11966 With public keys and the benefit of hindsight one standard format
11967 is used which works with EVP_PKEY, RSA or DSA structures: though
11968 it clearly returns an error if you try to read the wrong kind of key.
11970 Added a -pubkey option to the 'x509' utility to output the public key.
11971 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11972 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11973 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11974 that do the same as the EVP_PKEY_assign_*() except they up the
11975 reference count of the added key (they don't "swallow" the
11979 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11980 CRLs would fail if the file contained no certificates or no CRLs:
11981 added a new function to read in both types and return the number
11982 read: this means that if none are read it will be an error. The
11983 DER versions of the certificate and CRL reader would always fail
11984 because it isn't possible to mix certificates and CRLs in DER format
11985 without choking one or the other routine. Changed this to just read
11986 a certificate: this is the best we can do. Also modified the code
11987 in apps/verify.c to take notice of return codes: it was previously
11988 attempting to read in certificates from NULL pointers and ignoring
11989 any errors: this is one reason why the cert and CRL reader seemed
11990 to work. It doesn't check return codes from the default certificate
11991 routines: these may well fail if the certificates aren't installed.
11994 *) Code to support otherName option in GeneralName.
11997 *) First update to verify code. Change the verify utility
11998 so it warns if it is passed a self signed certificate:
11999 for consistency with the normal behaviour. X509_verify
12000 has been modified to it will now verify a self signed
12001 certificate if *exactly* the same certificate appears
12002 in the store: it was previously impossible to trust a
12003 single self signed certificate. This means that:
12004 openssl verify ss.pem
12005 now gives a warning about a self signed certificate but
12006 openssl verify -CAfile ss.pem ss.pem
12010 *) For servers, store verify_result in SSL_SESSION data structure
12011 (and add it to external session representation).
12012 This is needed when client certificate verifications fails,
12013 but an application-provided verification callback (set by
12014 SSL_CTX_set_cert_verify_callback) allows accepting the session
12015 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
12016 but returns 1): When the session is reused, we have to set
12017 ssl->verify_result to the appropriate error code to avoid
12019 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
12021 *) Fix a bug in the new PKCS#7 code: it didn't consider the
12022 case in PKCS7_dataInit() where the signed PKCS7 structure
12023 didn't contain any existing data because it was being created.
12024 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
12026 *) Add a salt to the key derivation routines in enc.c. This
12027 forms the first 8 bytes of the encrypted file. Also add a
12028 -S option to allow a salt to be input on the command line.
12031 *) New function X509_cmp(). Oddly enough there wasn't a function
12032 to compare two certificates. We do this by working out the SHA1
12033 hash and comparing that. X509_cmp() will be needed by the trust
12037 *) SSL_get1_session() is like SSL_get_session(), but increments
12038 the reference count in the SSL_SESSION returned.
12039 [Geoff Thorpe <geoff@eu.c2.net>]
12041 *) Fix for 'req': it was adding a null to request attributes.
12042 Also change the X509_LOOKUP and X509_INFO code to handle
12043 certificate auxiliary information.
12046 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
12050 *) Add the possibility to add extra information to the memory leak
12051 detecting output, to form tracebacks, showing from where each
12052 allocation was originated: CRYPTO_push_info("constant string") adds
12053 the string plus current file name and line number to a per-thread
12054 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
12055 is like calling CYRPTO_pop_info() until the stack is empty.
12056 Also updated memory leak detection code to be multi-thread-safe.
12059 *) Add options -text and -noout to pkcs7 utility and delete the
12060 encryption options which never did anything. Update docs.
12063 *) Add options to some of the utilities to allow the pass phrase
12064 to be included on either the command line (not recommended on
12065 OSes like Unix) or read from the environment. Update the
12066 manpages and fix a few bugs.
12069 *) Add a few manpages for some of the openssl commands.
12072 *) Fix the -revoke option in ca. It was freeing up memory twice,
12073 leaking and not finding already revoked certificates.
12076 *) Extensive changes to support certificate auxiliary information.
12077 This involves the use of X509_CERT_AUX structure and X509_AUX
12078 functions. An X509_AUX function such as PEM_read_X509_AUX()
12079 can still read in a certificate file in the usual way but it
12080 will also read in any additional "auxiliary information". By
12081 doing things this way a fair degree of compatibility can be
12082 retained: existing certificates can have this information added
12083 using the new 'x509' options.
12085 Current auxiliary information includes an "alias" and some trust
12086 settings. The trust settings will ultimately be used in enhanced
12087 certificate chain verification routines: currently a certificate
12088 can only be trusted if it is self signed and then it is trusted
12092 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
12093 The problem was that one of the replacement routines had not been working
12094 since SSLeay releases. For now the offending routine has been replaced
12095 with non-optimised assembler. Even so, this now gives around 95%
12096 performance improvement for 1024 bit RSA signs.
12099 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
12100 handling. Most clients have the effective key size in bits equal to
12101 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
12102 A few however don't do this and instead use the size of the decrypted key
12103 to determine the RC2 key length and the AlgorithmIdentifier to determine
12104 the effective key length. In this case the effective key length can still
12105 be 40 bits but the key length can be 168 bits for example. This is fixed
12106 by manually forcing an RC2 key into the EVP_PKEY structure because the
12107 EVP code can't currently handle unusual RC2 key sizes: it always assumes
12108 the key length and effective key length are equal.
12111 *) Add a bunch of functions that should simplify the creation of
12112 X509_NAME structures. Now you should be able to do:
12113 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
12114 and have it automatically work out the correct field type and fill in
12115 the structures. The more adventurous can try:
12116 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
12117 and it will (hopefully) work out the correct multibyte encoding.
12120 *) Change the 'req' utility to use the new field handling and multibyte
12121 copy routines. Before the DN field creation was handled in an ad hoc
12122 way in req, ca, and x509 which was rather broken and didn't support
12123 BMPStrings or UTF8Strings. Since some software doesn't implement
12124 BMPStrings or UTF8Strings yet, they can be enabled using the config file
12125 using the dirstring_type option. See the new comment in the default
12126 openssl.cnf for more info.
12129 *) Make crypto/rand/md_rand.c more robust:
12130 - Assure unique random numbers after fork().
12131 - Make sure that concurrent threads access the global counter and
12132 md serializably so that we never lose entropy in them
12133 or use exactly the same state in multiple threads.
12134 Access to the large state is not always serializable because
12135 the additional locking could be a performance killer, and
12136 md should be large enough anyway.
12139 *) New file apps/app_rand.c with commonly needed functionality
12140 for handling the random seed file.
12142 Use the random seed file in some applications that previously did not:
12144 dsaparam -genkey (which also ignored its '-rand' option),
12147 x509 (when signing).
12148 Except on systems with /dev/urandom, it is crucial to have a random
12149 seed file at least for key creation, DSA signing, and for DH exchanges;
12150 for RSA signatures we could do without one.
12152 gendh and gendsa (unlike genrsa) used to read only the first byte
12153 of each file listed in the '-rand' option. The function as previously
12154 found in genrsa is now in app_rand.c and is used by all programs
12155 that support '-rand'.
12158 *) In RAND_write_file, use mode 0600 for creating files;
12159 don't just chmod when it may be too late.
12162 *) Report an error from X509_STORE_load_locations
12163 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
12166 *) New function ASN1_mbstring_copy() this copies a string in either
12167 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
12168 into an ASN1_STRING type. A mask of permissible types is passed
12169 and it chooses the "minimal" type to use or an error if not type
12173 *) Add function equivalents to the various macros in asn1.h. The old
12174 macros are retained with an M_ prefix. Code inside the library can
12175 use the M_ macros. External code (including the openssl utility)
12176 should *NOT* in order to be "shared library friendly".
12179 *) Add various functions that can check a certificate's extensions
12180 to see if it usable for various purposes such as SSL client,
12181 server or S/MIME and CAs of these types. This is currently
12182 VERY EXPERIMENTAL but will ultimately be used for certificate chain
12183 verification. Also added a -purpose flag to x509 utility to
12184 print out all the purposes.
12187 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
12191 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
12192 for, obtain and decode and extension and obtain its critical flag.
12193 This allows all the necessary extension code to be handled in a
12194 single function call.
12197 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
12198 platforms. See crypto/rc4/rc4_enc.c for further details.
12201 *) New -noout option to asn1parse. This causes no output to be produced
12202 its main use is when combined with -strparse and -out to extract data
12203 from a file (which may not be in ASN.1 format).
12206 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
12207 when producing the local key id.
12208 [Richard Levitte <levitte@stacken.kth.se>]
12210 *) New option -dhparam in s_server. This allows a DH parameter file to be
12211 stated explicitly. If it is not stated then it tries the first server
12212 certificate file. The previous behaviour hard coded the filename
12216 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
12217 a public key to be input or output. For example:
12218 openssl rsa -in key.pem -pubout -out pubkey.pem
12219 Also added necessary DSA public key functions to handle this.
12222 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
12223 in the message. This was handled by allowing
12224 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
12225 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
12227 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
12228 to the end of the strings whereas this didn't. This would cause problems
12229 if strings read with d2i_ASN1_bytes() were later modified.
12230 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
12232 *) Fix for base64 decode bug. When a base64 bio reads only one line of
12233 data and it contains EOF it will end up returning an error. This is
12234 caused by input 46 bytes long. The cause is due to the way base64
12235 BIOs find the start of base64 encoded data. They do this by trying a
12236 trial decode on each line until they find one that works. When they
12237 do a flag is set and it starts again knowing it can pass all the
12238 data directly through the decoder. Unfortunately it doesn't reset
12239 the context it uses. This means that if EOF is reached an attempt
12240 is made to pass two EOFs through the context and this causes the
12241 resulting error. This can also cause other problems as well. As is
12242 usual with these problems it takes *ages* to find and the fix is
12243 trivial: move one line.
12244 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
12246 *) Ugly workaround to get s_client and s_server working under Windows. The
12247 old code wouldn't work because it needed to select() on sockets and the
12248 tty (for keypresses and to see if data could be written). Win32 only
12249 supports select() on sockets so we select() with a 1s timeout on the
12250 sockets and then see if any characters are waiting to be read, if none
12251 are present then we retry, we also assume we can always write data to
12252 the tty. This isn't nice because the code then blocks until we've
12253 received a complete line of data and it is effectively polling the
12254 keyboard at 1s intervals: however it's quite a bit better than not
12255 working at all :-) A dedicated Windows application might handle this
12256 with an event loop for example.
12259 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
12260 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
12261 will be called when RSA_sign() and RSA_verify() are used. This is useful
12262 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
12263 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
12264 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
12265 This necessitated the support of an extra signature type NID_md5_sha1
12266 for SSL signatures and modifications to the SSL library to use it instead
12267 of calling RSA_public_decrypt() and RSA_private_encrypt().
12270 *) Add new -verify -CAfile and -CApath options to the crl program, these
12271 will lookup a CRL issuers certificate and verify the signature in a
12272 similar way to the verify program. Tidy up the crl program so it
12273 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
12274 less strict. It will now permit CRL extensions even if it is not
12275 a V2 CRL: this will allow it to tolerate some broken CRLs.
12278 *) Initialize all non-automatic variables each time one of the openssl
12279 sub-programs is started (this is necessary as they may be started
12280 multiple times from the "OpenSSL>" prompt).
12281 [Lennart Bang, Bodo Moeller]
12283 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
12284 removing all other RSA functionality (this is what NO_RSA does). This
12285 is so (for example) those in the US can disable those operations covered
12286 by the RSA patent while allowing storage and parsing of RSA keys and RSA
12290 *) Non-copying interface to BIO pairs.
12291 (still largely untested)
12294 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
12295 ASCII string. This was handled independently in various places before.
12298 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
12299 UTF8 strings a character at a time.
12302 *) Use client_version from client hello to select the protocol
12303 (s23_srvr.c) and for RSA client key exchange verification
12304 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
12307 *) Add various utility functions to handle SPKACs, these were previously
12308 handled by poking round in the structure internals. Added new function
12309 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
12310 print, verify and generate SPKACs. Based on an original idea from
12311 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
12314 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
12317 *) Allow the config file extension section to be overwritten on the
12318 command line. Based on an original idea from Massimiliano Pala
12319 <madwolf@comune.modena.it>. The new option is called -extensions
12320 and can be applied to ca, req and x509. Also -reqexts to override
12321 the request extensions in req and -crlexts to override the crl extensions
12325 *) Add new feature to the SPKAC handling in ca. Now you can include
12326 the same field multiple times by preceding it by "XXXX." for example:
12329 this is the same syntax as used in the req config file.
12332 *) Allow certificate extensions to be added to certificate requests. These
12333 are specified in a 'req_extensions' option of the req section of the
12334 config file. They can be printed out with the -text option to req but
12335 are otherwise ignored at present.
12338 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
12339 data read consists of only the final block it would not decrypted because
12340 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
12341 A misplaced 'break' also meant the decrypted final block might not be
12342 copied until the next read.
12345 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
12346 a few extra parameters to the DH structure: these will be useful if
12347 for example we want the value of 'q' or implement X9.42 DH.
12350 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
12351 provides hooks that allow the default DSA functions or functions on a
12352 "per key" basis to be replaced. This allows hardware acceleration and
12353 hardware key storage to be handled without major modification to the
12354 library. Also added low level modexp hooks and CRYPTO_EX structure and
12355 associated functions.
12358 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
12359 as "read only": it can't be written to and the buffer it points to will
12360 not be freed. Reading from a read only BIO is much more efficient than
12361 a normal memory BIO. This was added because there are several times when
12362 an area of memory needs to be read from a BIO. The previous method was
12363 to create a memory BIO and write the data to it, this results in two
12364 copies of the data and an O(n^2) reading algorithm. There is a new
12365 function BIO_new_mem_buf() which creates a read only memory BIO from
12366 an area of memory. Also modified the PKCS#7 routines to use read only
12370 *) Bugfix: ssl23_get_client_hello did not work properly when called in
12371 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
12372 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
12373 but a retry condition occurred while trying to read the rest.
12376 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
12377 NID_pkcs7_encrypted by default: this was wrong since this should almost
12378 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
12379 the encrypted data type: this is a more sensible place to put it and it
12380 allows the PKCS#12 code to be tidied up that duplicated this
12384 *) Changed obj_dat.pl script so it takes its input and output files on
12385 the command line. This should avoid shell escape redirection problems
12389 *) Initial support for certificate extension requests, these are included
12390 in things like Xenroll certificate requests. Included functions to allow
12391 extensions to be obtained and added.
12394 *) -crlf option to s_client and s_server for sending newlines as
12395 CRLF (as required by many protocols).
12398 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
12400 *) Install libRSAglue.a when OpenSSL is built with RSAref.
12401 [Ralf S. Engelschall]
12403 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
12404 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
12406 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
12410 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
12411 DH parameters/keys (q is lost during that conversion, but the resulting
12412 DH parameters contain its length).
12414 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
12415 much faster than DH_generate_parameters (which creates parameters
12416 where p = 2*q + 1), and also the smaller q makes DH computations
12417 much more efficient (160-bit exponentiation instead of 1024-bit
12418 exponentiation); so this provides a convenient way to support DHE
12419 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
12420 utter importance to use
12421 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12423 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12424 when such DH parameters are used, because otherwise small subgroup
12425 attacks may become possible!
12428 *) Avoid memory leak in i2d_DHparams.
12431 *) Allow the -k option to be used more than once in the enc program:
12432 this allows the same encrypted message to be read by multiple recipients.
12435 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
12436 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
12437 it will always use the numerical form of the OID, even if it has a short
12441 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
12442 method only got called if p,q,dmp1,dmq1,iqmp components were present,
12443 otherwise bn_mod_exp was called. In the case of hardware keys for example
12444 no private key components need be present and it might store extra data
12445 in the RSA structure, which cannot be accessed from bn_mod_exp.
12446 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
12447 private key operations.
12450 *) Added support for SPARC Linux.
12453 *) pem_password_cb function type incompatibly changed from
12454 typedef int pem_password_cb(char *buf, int size, int rwflag);
12456 ....(char *buf, int size, int rwflag, void *userdata);
12457 so that applications can pass data to their callbacks:
12458 The PEM[_ASN1]_{read,write}... functions and macros now take an
12459 additional void * argument, which is just handed through whenever
12460 the password callback is called.
12461 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
12463 New function SSL_CTX_set_default_passwd_cb_userdata.
12465 Compatibility note: As many C implementations push function arguments
12466 onto the stack in reverse order, the new library version is likely to
12467 interoperate with programs that have been compiled with the old
12468 pem_password_cb definition (PEM_whatever takes some data that
12469 happens to be on the stack as its last argument, and the callback
12470 just ignores this garbage); but there is no guarantee whatsoever that
12473 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
12474 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
12475 problems not only on Windows, but also on some Unix platforms.
12476 To avoid problematic command lines, these definitions are now in an
12477 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
12478 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
12481 *) MIPS III/IV assembler module is reimplemented.
12484 *) More DES library cleanups: remove references to srand/rand and
12485 delete an unused file.
12488 *) Add support for the free Netwide assembler (NASM) under Win32,
12489 since not many people have MASM (ml) and it can be hard to obtain.
12490 This is currently experimental but it seems to work OK and pass all
12491 the tests. Check out INSTALL.W32 for info.
12494 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12495 without temporary keys kept an extra copy of the server key,
12496 and connections with temporary keys did not free everything in case
12500 *) New function RSA_check_key and new openssl rsa option -check
12501 for verifying the consistency of RSA keys.
12502 [Ulf Moeller, Bodo Moeller]
12504 *) Various changes to make Win32 compile work:
12505 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12506 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12507 comparison" warnings.
12508 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12511 *) Add a debugging option to PKCS#5 v2 key generation function: when
12512 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12513 derived keys are printed to stderr.
12516 *) Copy the flags in ASN1_STRING_dup().
12517 [Roman E. Pavlov <pre@mo.msk.ru>]
12519 *) The x509 application mishandled signing requests containing DSA
12520 keys when the signing key was also DSA and the parameters didn't match.
12522 It was supposed to omit the parameters when they matched the signing key:
12523 the verifying software was then supposed to automatically use the CA's
12524 parameters if they were absent from the end user certificate.
12526 Omitting parameters is no longer recommended. The test was also
12527 the wrong way round! This was probably due to unusual behaviour in
12528 EVP_cmp_parameters() which returns 1 if the parameters match.
12529 This meant that parameters were omitted when they *didn't* match and
12530 the certificate was useless. Certificates signed with 'ca' didn't have
12532 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12534 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12535 The interface is as follows:
12536 Applications can use
12537 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12538 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12539 "off" is now the default.
12540 The library internally uses
12541 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12542 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12543 to disable memory-checking temporarily.
12545 Some inconsistent states that previously were possible (and were
12546 even the default) are now avoided.
12548 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12549 with each memory chunk allocated; this is occasionally more helpful
12550 than just having a counter.
12552 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12554 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12558 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12559 which largely parallels "options", but is for changing API behaviour,
12560 whereas "options" are about protocol behaviour.
12561 Initial "mode" flags are:
12563 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12564 a single record has been written.
12565 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12566 retries use the same buffer location.
12567 (But all of the contents must be
12571 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12574 *) Fix problems with no-hmac etc.
12575 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12577 *) New functions RSA_get_default_method(), RSA_set_method() and
12578 RSA_get_method(). These allows replacement of RSA_METHODs without having
12579 to mess around with the internals of an RSA structure.
12582 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12583 Also really enable memory leak checks in openssl.c and in some
12585 [Chad C. Mulligan, Bodo Moeller]
12587 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12588 up the length of negative integers. This has now been simplified to just
12589 store the length when it is first determined and use it later, rather
12590 than trying to keep track of where data is copied and updating it to
12592 [Steve Henson, reported by Brien Wheeler
12593 <bwheeler@authentica-security.com>]
12595 *) Add a new function PKCS7_signatureVerify. This allows the verification
12596 of a PKCS#7 signature but with the signing certificate passed to the
12597 function itself. This contrasts with PKCS7_dataVerify which assumes the
12598 certificate is present in the PKCS#7 structure. This isn't always the
12599 case: certificates can be omitted from a PKCS#7 structure and be
12600 distributed by "out of band" means (such as a certificate database).
12603 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12604 function prototypes in pem.h, also change util/mkdef.pl to add the
12605 necessary function names.
12608 *) mk1mf.pl (used by Windows builds) did not properly read the
12609 options set by Configure in the top level Makefile, and Configure
12610 was not even able to write more than one option correctly.
12611 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12614 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12615 file to be loaded from a BIO or FILE pointer. The BIO version will
12616 for example allow memory BIOs to contain config info.
12619 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12620 Whoever hopes to achieve shared-library compatibility across versions
12621 must use this, not the compile-time macro.
12622 (Exercise 0.9.4: Which is the minimum library version required by
12624 Note: All this applies only to multi-threaded programs, others don't
12628 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12629 through a BIO pair triggered the default case, i.e.
12630 SSLerr(...,SSL_R_UNKNOWN_STATE).
12633 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12634 can use the SSL library even if none of the specific BIOs is
12638 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12639 for the encoded length.
12640 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12642 *) Add initial documentation of the X509V3 functions.
12645 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12646 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12647 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12648 secure PKCS#8 private key format with a high iteration count.
12651 *) Fix determination of Perl interpreter: A perl or perl5
12652 _directory_ in $PATH was also accepted as the interpreter.
12653 [Ralf S. Engelschall]
12655 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12656 wrong with it but it was very old and did things like calling
12657 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12658 unusual formatting.
12661 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12662 to use the new extension code.
12665 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12666 with macros. This should make it easier to change their form, add extra
12667 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12671 *) Add to configuration table a new entry that can specify an alternative
12672 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12673 according to Mark Crispin <MRC@Panda.COM>.
12677 *) DES CBC did not update the IV. Weird.
12680 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12681 Changing the behaviour of the former might break existing programs --
12682 where IV updating is needed, des_ncbc_encrypt can be used.
12685 *) When bntest is run from "make test" it drives bc to check its
12686 calculations, as well as internally checking them. If an internal check
12687 fails, it needs to cause bc to give a non-zero result or make test carries
12688 on without noticing the failure. Fixed.
12691 *) DES library cleanups.
12694 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12695 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12696 ciphers. NOTE: although the key derivation function has been verified
12697 against some published test vectors it has not been extensively tested
12698 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12702 *) Instead of "mkdir -p", which is not fully portable, use new
12703 Perl script "util/mkdir-p.pl".
12706 *) Rewrite the way password based encryption (PBE) is handled. It used to
12707 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12708 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12709 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12710 the 'parameter' field of the AlgorithmIdentifier is passed to the
12711 underlying key generation function so it must do its own ASN1 parsing.
12712 This has also changed the EVP_PBE_CipherInit() function which now has a
12713 'parameter' argument instead of literal salt and iteration count values
12714 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12717 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12718 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12719 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12720 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12721 value was just used as a "magic string" and not used directly its
12722 value doesn't matter.
12725 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12729 *) "linux-sparc64" configuration (ultrapenguin).
12730 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12731 "linux-sparc" configuration.
12732 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12734 *) config now generates no-xxx options for missing ciphers.
12737 *) Support the EBCDIC character set (work in progress).
12738 File ebcdic.c not yet included because it has a different license.
12739 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12741 *) Support BS2000/OSD-POSIX.
12742 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12744 *) Make callbacks for key generation use void * instead of char *.
12747 *) Make S/MIME samples compile (not yet tested).
12750 *) Additional typesafe stacks.
12753 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12757 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12759 *) New configuration variant "sco5-gcc".
12761 *) Updated some demos.
12762 [Sean O Riordain, Wade Scholine]
12764 *) Add missing BIO_free at exit of pkcs12 application.
12767 *) Fix memory leak in conf.c.
12770 *) Updates for Win32 to assembler version of MD5.
12773 *) Set #! path to perl in apps/der_chop to where we found it
12774 instead of using a fixed path.
12777 *) SHA library changes for irix64-mips4-cc.
12780 *) Improvements for VMS support.
12784 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12786 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12787 This also avoids the problems with SC4.2 and unpatched SC5.
12788 [Andy Polyakov <appro@fy.chalmers.se>]
12790 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12791 These are required because of the typesafe stack would otherwise break
12792 existing code. If old code used a structure member which used to be STACK
12793 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12794 sk_num or sk_value it would produce an error because the num, data members
12795 are not present in STACK_OF. Now it just produces a warning. sk_set
12796 replaces the old method of assigning a value to sk_value
12797 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12798 that does this will no longer work (and should use sk_set instead) but
12799 this could be regarded as a "questionable" behaviour anyway.
12802 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12803 correctly handle encrypted S/MIME data.
12806 *) Change type of various DES function arguments from des_cblock
12807 (which means, in function argument declarations, pointer to char)
12808 to des_cblock * (meaning pointer to array with 8 char elements),
12809 which allows the compiler to do more typechecking; it was like
12810 that back in SSLeay, but with lots of ugly casts.
12812 Introduce new type const_des_cblock.
12815 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12816 problems: find RecipientInfo structure that matches recipient certificate
12817 and initialise the ASN1 structures properly based on passed cipher.
12820 *) Belatedly make the BN tests actually check the results.
12823 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12824 to and from BNs: it was completely broken. New compilation option
12825 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12826 key elements as negative integers.
12829 *) Reorganize and speed up MD5.
12830 [Andy Polyakov <appro@fy.chalmers.se>]
12833 [Richard Levitte <richard@levitte.org>]
12835 *) New option -out to asn1parse to allow the parsed structure to be
12836 output to a file. This is most useful when combined with the -strparse
12837 option to examine the output of things like OCTET STRINGS.
12840 *) Make SSL library a little more fool-proof by not requiring any longer
12841 that SSL_set_{accept,connect}_state be called before
12842 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12843 in many applications because usually everything *appeared* to work as
12844 intended anyway -- now it really works as intended).
12847 *) Move openssl.cnf out of lib/.
12850 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12851 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12852 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12853 [Ralf S. Engelschall]
12855 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12856 handle PKCS#7 enveloped data properly.
12857 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12859 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12860 copying pointers. The cert_st handling is changed by this in
12861 various ways (and thus what used to be known as ctx->default_cert
12862 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12863 any longer when s->cert does not give us what we need).
12864 ssl_cert_instantiate becomes obsolete by this change.
12865 As soon as we've got the new code right (possibly it already is?),
12866 we have solved a couple of bugs of the earlier code where s->cert
12867 was used as if it could not have been shared with other SSL structures.
12869 Note that using the SSL API in certain dirty ways now will result
12870 in different behaviour than observed with earlier library versions:
12871 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12872 does not influence s as it used to.
12874 In order to clean up things more thoroughly, inside SSL_SESSION
12875 we don't use CERT any longer, but a new structure SESS_CERT
12876 that holds per-session data (if available); currently, this is
12877 the peer's certificate chain and, for clients, the server's certificate
12878 and temporary key. CERT holds only those values that can have
12879 meaningful defaults in an SSL_CTX.
12882 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12883 from the internal representation. Various PKCS#7 fixes: remove some
12884 evil casts and set the enc_dig_alg field properly based on the signing
12888 *) Allow PKCS#12 password to be set from the command line or the
12889 environment. Let 'ca' get its config file name from the environment
12890 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12894 *) Allow certificate policies extension to use an IA5STRING for the
12895 organization field. This is contrary to the PKIX definition but
12896 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12900 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12901 without disallowing inline assembler and the like for non-pedantic builds.
12904 *) Support Borland C++ builder.
12905 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12907 *) Support Mingw32.
12910 *) SHA-1 cleanups and performance enhancements.
12911 [Andy Polyakov <appro@fy.chalmers.se>]
12913 *) Sparc v8plus assembler for the bignum library.
12914 [Andy Polyakov <appro@fy.chalmers.se>]
12916 *) Accept any -xxx and +xxx compiler options in Configure.
12919 *) Update HPUX configuration.
12922 *) Add missing sk_<type>_unshift() function to safestack.h
12923 [Ralf S. Engelschall]
12925 *) New function SSL_CTX_use_certificate_chain_file that sets the
12926 "extra_cert"s in addition to the certificate. (This makes sense
12927 only for "PEM" format files, as chains as a whole are not
12931 *) Support verify_depth from the SSL API.
12932 x509_vfy.c had what can be considered an off-by-one-error:
12933 Its depth (which was not part of the external interface)
12934 was actually counting the number of certificates in a chain;
12935 now it really counts the depth.
12938 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12939 instead of X509err, which often resulted in confusing error
12940 messages since the error codes are not globally unique
12941 (e.g. an alleged error in ssl3_accept when a certificate
12942 didn't match the private key).
12944 *) New function SSL_CTX_set_session_id_context that allows to set a default
12945 value (so that you don't need SSL_set_session_id_context for each
12946 connection using the SSL_CTX).
12949 *) OAEP decoding bug fix.
12952 *) Support INSTALL_PREFIX for package builders, as proposed by
12956 *) New Configure options "threads" and "no-threads". For systems
12957 where the proper compiler options are known (currently Solaris
12958 and Linux), "threads" is the default.
12961 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12964 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12965 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12966 such as /usr/local/bin.
12969 *) "make linux-shared" to build shared libraries.
12970 [Niels Poppe <niels@netbox.org>]
12972 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12975 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12976 extension adding in x509 utility.
12979 *) Remove NOPROTO sections and error code comments.
12982 *) Partial rewrite of the DEF file generator to now parse the ANSI
12986 *) New Configure options --prefix=DIR and --openssldir=DIR.
12989 *) Complete rewrite of the error code script(s). It is all now handled
12990 by one script at the top level which handles error code gathering,
12991 header rewriting and C source file generation. It should be much better
12992 than the old method: it now uses a modified version of Ulf's parser to
12993 read the ANSI prototypes in all header files (thus the old K&R definitions
12994 aren't needed for error creation any more) and do a better job of
12995 translating function codes into names. The old 'ASN1 error code embedded
12996 in a comment' is no longer necessary and it doesn't use .err files which
12997 have now been deleted. Also the error code call doesn't have to appear all
12998 on one line (which resulted in some large lines...).
13001 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
13004 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
13005 0 (which usually indicates a closed connection), but continue reading.
13008 *) Fix some race conditions.
13011 *) Add support for CRL distribution points extension. Add Certificate
13012 Policies and CRL distribution points documentation.
13015 *) Move the autogenerated header file parts to crypto/opensslconf.h.
13018 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
13019 8 of keying material. Merlin has also confirmed interop with this fix
13020 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
13021 [Merlin Hughes <merlin@baltimore.ie>]
13023 *) Fix lots of warnings.
13024 [Richard Levitte <levitte@stacken.kth.se>]
13026 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
13027 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
13028 [Richard Levitte <levitte@stacken.kth.se>]
13030 *) Fix problems with sizeof(long) == 8.
13031 [Andy Polyakov <appro@fy.chalmers.se>]
13033 *) Change functions to ANSI C.
13036 *) Fix typos in error codes.
13037 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
13039 *) Remove defunct assembler files from Configure.
13042 *) SPARC v8 assembler BIGNUM implementation.
13043 [Andy Polyakov <appro@fy.chalmers.se>]
13045 *) Support for Certificate Policies extension: both print and set.
13046 Various additions to support the r2i method this uses.
13049 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
13050 return a const string when you are expecting an allocated buffer.
13053 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
13054 types DirectoryString and DisplayText.
13057 *) Add code to allow r2i extensions to access the configuration database,
13058 add an LHASH database driver and add several ctx helper functions.
13061 *) Fix an evil bug in bn_expand2() which caused various BN functions to
13062 fail when they extended the size of a BIGNUM.
13065 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
13066 support typesafe stack.
13069 *) Fix typo in SSL_[gs]et_options().
13070 [Nils Frostberg <nils@medcom.se>]
13072 *) Delete various functions and files that belonged to the (now obsolete)
13073 old X509V3 handling code.
13076 *) New Configure option "rsaref".
13079 *) Don't auto-generate pem.h.
13082 *) Introduce type-safe ASN.1 SETs.
13085 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
13086 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
13088 *) Introduce type-safe STACKs. This will almost certainly break lots of code
13089 that links with OpenSSL (well at least cause lots of warnings), but fear
13090 not: the conversion is trivial, and it eliminates loads of evil casts. A
13091 few STACKed things have been converted already. Feel free to convert more.
13092 In the fullness of time, I'll do away with the STACK type altogether.
13095 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
13096 specified in <certfile> by updating the entry in the index.txt file.
13097 This way one no longer has to edit the index.txt file manually for
13098 revoking a certificate. The -revoke option does the gory details now.
13099 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
13101 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
13102 `-text' option at all and this way the `-noout -text' combination was
13103 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
13104 [Ralf S. Engelschall]
13106 *) Make sure a corresponding plain text error message exists for the
13107 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
13108 verify callback function determined that a certificate was revoked.
13109 [Ralf S. Engelschall]
13111 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
13112 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
13113 all available ciphers including rc5, which was forgotten until now.
13114 In order to let the testing shell script know which algorithms
13115 are available, a new (up to now undocumented) command
13116 "openssl list-cipher-commands" is used.
13119 *) Bugfix: s_client occasionally would sleep in select() when
13120 it should have checked SSL_pending() first.
13123 *) New functions DSA_do_sign and DSA_do_verify to provide access to
13124 the raw DSA values prior to ASN.1 encoding.
13127 *) Tweaks to Configure
13128 [Niels Poppe <niels@netbox.org>]
13130 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
13134 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
13137 *) New config option to avoid instructions that are illegal on the 80386.
13138 The default code is faster, but requires at least a 486.
13141 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
13142 SSL2_SERVER_VERSION (not used at all) macros, which are now the
13143 same as SSL2_VERSION anyway.
13146 *) New "-showcerts" option for s_client.
13149 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
13150 application. Various cleanups and fixes.
13153 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
13154 modify error routines to work internally. Add error codes and PBE init
13155 to library startup routines.
13158 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
13159 packing functions to asn1 and evp. Changed function names and error
13160 codes along the way.
13163 *) PKCS12 integration: and so it begins... First of several patches to
13164 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
13165 objects to objects.h
13168 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
13169 and display support for Thawte strong extranet extension.
13172 *) Add LinuxPPC support.
13173 [Jeff Dubrule <igor@pobox.org>]
13175 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
13176 bn_div_words in alpha.s.
13177 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
13179 *) Make sure the RSA OAEP test is skipped under -DRSAref because
13180 OAEP isn't supported when OpenSSL is built with RSAref.
13181 [Ulf Moeller <ulf@fitug.de>]
13183 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
13184 so they no longer are missing under -DNOPROTO.
13185 [Soren S. Jorvang <soren@t.dk>]
13188 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
13190 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
13191 doesn't work when the session is reused. Coming soon!
13194 *) Fix a security hole, that allows sessions to be reused in the wrong
13195 context thus bypassing client cert protection! All software that uses
13196 client certs and session caches in multiple contexts NEEDS PATCHING to
13197 allow session reuse! A fuller solution is in the works.
13198 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
13200 *) Some more source tree cleanups (removed obsolete files
13201 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
13202 permission on "config" script to be executable) and a fix for the INSTALL
13204 [Ulf Moeller <ulf@fitug.de>]
13206 *) Remove some legacy and erroneous uses of malloc, free instead of
13208 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
13210 *) Make rsa_oaep_test return non-zero on error.
13211 [Ulf Moeller <ulf@fitug.de>]
13213 *) Add support for native Solaris shared libraries. Configure
13214 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
13215 if someone would make that last step automatic.
13216 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
13218 *) ctx_size was not built with the right compiler during "make links". Fixed.
13221 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
13222 except NULL ciphers". This means the default cipher list will no longer
13223 enable NULL ciphers. They need to be specifically enabled e.g. with
13224 the string "DEFAULT:eNULL".
13227 *) Fix to RSA private encryption routines: if p < q then it would
13228 occasionally produce an invalid result. This will only happen with
13229 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
13232 *) Be less restrictive and allow also `perl util/perlpath.pl
13233 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
13234 because this way one can also use an interpreter named `perl5' (which is
13235 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
13236 installed as `perl').
13237 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13239 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
13240 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13242 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
13243 advapi32.lib to Win32 build and change the pem test comparison
13244 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
13245 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
13246 and crypto/des/ede_cbcm_enc.c.
13249 *) DES quad checksum was broken on big-endian architectures. Fixed.
13252 *) Comment out two functions in bio.h that aren't implemented. Fix up the
13253 Win32 test batch file so it (might) work again. The Win32 test batch file
13254 is horrible: I feel ill....
13257 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
13258 in e_os.h. Audit of header files to check ANSI and non ANSI
13259 sections: 10 functions were absent from non ANSI section and not exported
13260 from Windows DLLs. Fixed up libeay.num for new functions.
13263 *) Make `openssl version' output lines consistent.
13264 [Ralf S. Engelschall]
13266 *) Fix Win32 symbol export lists for BIO functions: Added
13267 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
13268 to ms/libeay{16,32}.def.
13269 [Ralf S. Engelschall]
13271 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
13272 fine under Unix and passes some trivial tests I've now added. But the
13273 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
13274 added to make sure no one expects that this stuff really works in the
13275 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
13276 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
13278 [Ralf S. Engelschall]
13280 *) Fix the generation of two part addresses in perl.
13281 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
13283 *) Add config entry for Linux on MIPS.
13284 [John Tobey <jtobey@channel1.com>]
13286 *) Make links whenever Configure is run, unless we are on Windoze.
13289 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
13290 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
13294 *) Add a useful kludge to allow package maintainers to specify compiler and
13295 other platforms details on the command line without having to patch the
13296 Configure script every time: One now can use ``perl Configure
13297 <id>:<details>'', i.e. platform ids are allowed to have details appended
13298 to them (separated by colons). This is treated as there would be a static
13299 pre-configured entry in Configure's %table under key <id> with value
13300 <details> and ``perl Configure <id>'' is called. So, when you want to
13301 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
13302 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
13303 now, which overrides the FreeBSD-elf entry on-the-fly.
13304 [Ralf S. Engelschall]
13306 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
13309 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
13310 on the `perl Configure ...' command line. This way one can compile
13311 OpenSSL libraries with Position Independent Code (PIC) which is needed
13312 for linking it into DSOs.
13313 [Ralf S. Engelschall]
13315 *) Remarkably, export ciphers were totally broken and no-one had noticed!
13319 *) Cleaned up the LICENSE document: The official contact for any license
13320 questions now is the OpenSSL core team under openssl-core@openssl.org.
13321 And add a paragraph about the dual-license situation to make sure people
13322 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
13323 to the OpenSSL toolkit.
13324 [Ralf S. Engelschall]
13326 *) General source tree makefile cleanups: Made `making xxx in yyy...'
13327 display consistent in the source tree and replaced `/bin/rm' by `rm'.
13328 Additionally cleaned up the `make links' target: Remove unnecessary
13329 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
13330 to speed processing and no longer clutter the display with confusing
13331 stuff. Instead only the actually done links are displayed.
13332 [Ralf S. Engelschall]
13334 *) Permit null encryption ciphersuites, used for authentication only. It used
13335 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
13336 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
13340 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
13341 signed attributes when verifying signatures (this would break them),
13342 the detached data encoding was wrong and public keys obtained using
13343 X509_get_pubkey() weren't freed.
13346 *) Add text documentation for the BUFFER functions. Also added a work around
13347 to a Win95 console bug. This was triggered by the password read stuff: the
13348 last character typed gets carried over to the next fread(). If you were
13349 generating a new cert request using 'req' for example then the last
13350 character of the passphrase would be CR which would then enter the first
13354 *) Added the new `Includes OpenSSL Cryptography Software' button as
13355 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
13356 button and can be used by applications based on OpenSSL to show the
13357 relationship to the OpenSSL project.
13358 [Ralf S. Engelschall]
13360 *) Remove confusing variables in function signatures in files
13361 ssl/ssl_lib.c and ssl/ssl.h.
13362 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13364 *) Don't install bss_file.c under PREFIX/include/
13365 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13367 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
13368 functions that return function pointers and has support for NT specific
13369 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
13370 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
13371 unsigned to signed types: this was killing the Win32 compile.
13374 *) Add new certificate file to stack functions,
13375 SSL_add_dir_cert_subjects_to_stack() and
13376 SSL_add_file_cert_subjects_to_stack(). These largely supplant
13377 SSL_load_client_CA_file(), and can be used to add multiple certs easily
13378 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
13379 This means that Apache-SSL and similar packages don't have to mess around
13380 to add as many CAs as they want to the preferred list.
13383 *) Experiment with doxygen documentation. Currently only partially applied to
13385 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
13386 openssl.doxy as the configuration file.
13389 *) Get rid of remaining C++-style comments which strict C compilers hate.
13390 [Ralf S. Engelschall, pointed out by Carlos Amengual]
13392 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
13393 compiled in by default: it has problems with large keys.
13396 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
13397 DH private keys and/or callback functions which directly correspond to
13398 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
13399 is needed for applications which have to configure certificates on a
13400 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
13402 For the RSA certificate situation is makes no difference, but
13403 for the DSA certificate situation this fixes the "no shared cipher"
13404 problem where the OpenSSL cipher selection procedure failed because the
13405 temporary keys were not overtaken from the context and the API provided
13406 no way to reconfigure them.
13407 The new functions now let applications reconfigure the stuff and they
13408 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
13409 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
13410 non-public-API function ssl_cert_instantiate() is used as a helper
13411 function and also to reduce code redundancy inside ssl_rsa.c.
13412 [Ralf S. Engelschall]
13414 *) Move s_server -dcert and -dkey options out of the undocumented feature
13415 area because they are useful for the DSA situation and should be
13416 recognized by the users.
13417 [Ralf S. Engelschall]
13419 *) Fix the cipher decision scheme for export ciphers: the export bits are
13420 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
13421 SSL_EXP_MASK. So, the original variable has to be used instead of the
13422 already masked variable.
13423 [Richard Levitte <levitte@stacken.kth.se>]
13425 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
13426 [Richard Levitte <levitte@stacken.kth.se>]
13428 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
13429 from `int' to `unsigned int' because it's a length and initialized by
13430 EVP_DigestFinal() which expects an `unsigned int *'.
13431 [Richard Levitte <levitte@stacken.kth.se>]
13433 *) Don't hard-code path to Perl interpreter on shebang line of Configure
13434 script. Instead use the usual Shell->Perl transition trick.
13435 [Ralf S. Engelschall]
13437 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
13438 (in addition to RSA certificates) to match the behaviour of `openssl dsa
13439 -noout -modulus' as it's already the case for `openssl rsa -noout
13440 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
13441 currently the public key is printed (a decision which was already done by
13442 `openssl dsa -modulus' in the past) which serves a similar purpose.
13443 Additionally the NO_RSA no longer completely removes the whole -modulus
13444 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
13446 [Ralf S. Engelschall]
13448 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
13449 BIO. See the source (crypto/evp/bio_ok.c) for more info.
13450 [Arne Ansper <arne@ats.cyber.ee>]
13452 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
13453 to be added. Now both 'req' and 'ca' can use new objects defined in the
13457 *) Add cool BIO that does syslog (or event log on NT).
13458 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
13460 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
13461 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
13462 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
13463 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
13466 *) Add preliminary config info for new extension code.
13469 *) Make RSA_NO_PADDING really use no padding.
13470 [Ulf Moeller <ulf@fitug.de>]
13472 *) Generate errors when private/public key check is done.
13475 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
13476 for some CRL extensions and new objects added.
13479 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
13480 key usage extension and fuller support for authority key id.
13483 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
13484 padding method for RSA, which is recommended for new applications in PKCS
13485 #1 v2.0 (RFC 2437, October 1998).
13486 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13487 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13488 against Bleichbacher's attack on RSA.
13489 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13492 *) Updates to the new SSL compression code
13493 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13495 *) Fix so that the version number in the master secret, when passed
13496 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13497 (because the server will not accept higher), that the version number
13498 is 0x03,0x01, not 0x03,0x00
13499 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13501 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13502 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13503 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13506 *) Support for RAW extensions where an arbitrary extension can be
13507 created by including its DER encoding. See apps/openssl.cnf for
13511 *) Make sure latest Perl versions don't interpret some generated C array
13512 code as Perl array code in the crypto/err/err_genc.pl script.
13513 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13515 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13516 not many people have the assembler. Various Win32 compilation fixes and
13517 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13518 build instructions.
13521 *) Modify configure script 'Configure' to automatically create crypto/date.h
13522 file under Win32 and also build pem.h from pem.org. New script
13523 util/mkfiles.pl to create the MINFO file on environments that can't do a
13524 'make files': perl util/mkfiles.pl >MINFO should work.
13527 *) Major rework of DES function declarations, in the pursuit of correctness
13528 and purity. As a result, many evil casts evaporated, and some weirdness,
13529 too. You may find this causes warnings in your code. Zapping your evil
13530 casts will probably fix them. Mostly.
13533 *) Fix for a typo in asn1.h. Bug fix to object creation script
13534 obj_dat.pl. It considered a zero in an object definition to mean
13535 "end of object": none of the objects in objects.h have any zeros
13536 so it wasn't spotted.
13537 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13539 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13540 Masking (CBCM). In the absence of test vectors, the best I have been able
13541 to do is check that the decrypt undoes the encrypt, so far. Send me test
13542 vectors if you have them.
13545 *) Correct calculation of key length for export ciphers (too much space was
13546 allocated for null ciphers). This has not been tested!
13549 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13550 message is now correct (it understands "crypto" and "ssl" on its
13551 command line). There is also now an "update" option. This will update
13552 the util/ssleay.num and util/libeay.num files with any new functions.
13554 perl util/mkdef.pl crypto ssl update
13555 it will update them.
13558 *) Overhauled the Perl interface (perl/*):
13559 - ported BN stuff to OpenSSL's different BN library
13560 - made the perl/ source tree CVS-aware
13561 - renamed the package from SSLeay to OpenSSL (the files still contain
13562 their history because I've copied them in the repository)
13563 - removed obsolete files (the test scripts will be replaced
13564 by better Test::Harness variants in the future)
13565 [Ralf S. Engelschall]
13567 *) First cut for a very conservative source tree cleanup:
13568 1. merge various obsolete readme texts into doc/ssleay.txt
13569 where we collect the old documents and readme texts.
13570 2. remove the first part of files where I'm already sure that we no
13571 longer need them because of three reasons: either they are just temporary
13572 files which were left by Eric or they are preserved original files where
13573 I've verified that the diff is also available in the CVS via "cvs diff
13574 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13575 the crypto/md/ stuff).
13576 [Ralf S. Engelschall]
13578 *) More extension code. Incomplete support for subject and issuer alt
13579 name, issuer and authority key id. Change the i2v function parameters
13580 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13581 what that's for :-) Fix to ASN1 macro which messed up
13582 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13585 *) Preliminary support for ENUMERATED type. This is largely copied from the
13589 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13590 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13592 *) Make sure `make rehash' target really finds the `openssl' program.
13593 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13595 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13596 like to hear about it if this slows down other processors.
13599 *) Add CygWin32 platform information to Configure script.
13600 [Alan Batie <batie@aahz.jf.intel.com>]
13602 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13603 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13605 *) New program nseq to manipulate netscape certificate sequences
13608 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13612 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13613 but the BN code had some problems that would cause failures when
13614 doing certificate verification and some other functions.
13615 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13617 *) Add ASN1 and PEM code to support netscape certificate sequences.
13620 *) Add ASN1 and PEM code to support netscape certificate sequences.
13623 *) Add several PKIX and private extended key usage OIDs.
13626 *) Modify the 'ca' program to handle the new extension code. Modify
13627 openssl.cnf for new extension format, add comments.
13630 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13631 and add a sample to openssl.cnf so req -x509 now adds appropriate
13635 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13636 error code, add initial support to X509_print() and x509 application.
13639 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13640 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13641 stuff is currently isolated and isn't even compiled yet.
13644 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13645 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13646 Removed the versions check from X509 routines when loading extensions:
13647 this allows certain broken certificates that don't set the version
13648 properly to be processed.
13651 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13652 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13653 can still be regenerated with "make depend".
13656 *) Spelling mistake in C version of CAST-128.
13657 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13659 *) Changes to the error generation code. The perl script err-code.pl
13660 now reads in the old error codes and retains the old numbers, only
13661 adding new ones if necessary. It also only changes the .err files if new
13662 codes are added. The makefiles have been modified to only insert errors
13663 when needed (to avoid needlessly modifying header files). This is done
13664 by only inserting errors if the .err file is newer than the auto generated
13665 C file. To rebuild all the error codes from scratch (the old behaviour)
13666 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13667 or delete all the .err files.
13670 *) CAST-128 was incorrectly implemented for short keys. The C version has
13671 been fixed, but is untested. The assembler versions are also fixed, but
13672 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13673 to regenerate it if needed.
13674 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13675 Hagino <itojun@kame.net>]
13677 *) File was opened incorrectly in randfile.c.
13678 [Ulf Möller <ulf@fitug.de>]
13680 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13681 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13682 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13683 al: it's just almost always a UTCTime. Note this patch adds new error
13684 codes so do a "make errors" if there are problems.
13687 *) Correct Linux 1 recognition in config.
13688 [Ulf Möller <ulf@fitug.de>]
13690 *) Remove pointless MD5 hash when using DSA keys in ca.
13691 [Anonymous <nobody@replay.com>]
13693 *) Generate an error if given an empty string as a cert directory. Also
13694 generate an error if handed NULL (previously returned 0 to indicate an
13695 error, but didn't set one).
13696 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13698 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13701 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13702 parameters. This was causing a warning which killed off the Win32 compile.
13705 *) Remove C++ style comments from crypto/bn/bn_local.h.
13706 [Neil Costigan <neil.costigan@celocom.com>]
13708 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13709 based on a text string, looking up short and long names and finally
13710 "dot" format. The "dot" format stuff didn't work. Added new function
13711 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13712 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13713 OID is not part of the table.
13716 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13717 X509_LOOKUP_by_alias().
13720 *) Sort openssl functions by name.
13723 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13724 encryption from sample DSA keys (in case anyone is interested the password
13728 *) Make _all_ *_free functions accept a NULL pointer.
13729 [Frans Heymans <fheymans@isaserver.be>]
13731 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13733 [Anonymous <nobody@replay.com>]
13735 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13736 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13738 *) Don't blow it for numeric -newkey arguments to apps/req.
13739 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13741 *) Temp key "for export" tests were wrong in s3_srvr.c.
13742 [Anonymous <nobody@replay.com>]
13744 *) Add prototype for temp key callback functions
13745 SSL_CTX_set_tmp_{rsa,dh}_callback().
13748 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13749 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13752 *) X509_name_add_entry() freed the wrong thing after an error.
13753 [Arne Ansper <arne@ats.cyber.ee>]
13755 *) rsa_eay.c would attempt to free a NULL context.
13756 [Arne Ansper <arne@ats.cyber.ee>]
13758 *) BIO_s_socket() had a broken should_retry() on Windoze.
13759 [Arne Ansper <arne@ats.cyber.ee>]
13761 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13762 [Arne Ansper <arne@ats.cyber.ee>]
13764 *) Make sure the already existing X509_STORE->depth variable is initialized
13765 in X509_STORE_new(), but document the fact that this variable is still
13766 unused in the certificate verification process.
13767 [Ralf S. Engelschall]
13769 *) Fix the various library and apps files to free up pkeys obtained from
13770 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13773 *) Fix reference counting in X509_PUBKEY_get(). This makes
13774 demos/maurice/example2.c work, amongst others, probably.
13775 [Steve Henson and Ben Laurie]
13777 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13778 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13779 are no longer created. This way we have a single and consistent command
13780 line interface `openssl <command>', similar to `cvs <command>'.
13781 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13783 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13784 BIT STRING wrapper always have zero unused bits.
13787 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13790 *) Make the top-level INSTALL documentation easier to understand.
13793 *) Makefiles updated to exit if an error occurs in a sub-directory
13794 make (including if user presses ^C) [Paul Sutton]
13796 *) Make Montgomery context stuff explicit in RSA data structure.
13799 *) Fix build order of pem and err to allow for generated pem.h.
13802 *) Fix renumbering bug in X509_NAME_delete_entry().
13805 *) Enhanced the err-ins.pl script so it makes the error library number
13806 global and can add a library name. This is needed for external ASN1 and
13807 other error libraries.
13810 *) Fixed sk_insert which never worked properly.
13813 *) Fix ASN1 macros so they can handle indefinite length constructed
13814 EXPLICIT tags. Some non standard certificates use these: they can now
13818 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13819 into a single doc/ssleay.txt bundle. This way the information is still
13820 preserved but no longer messes up this directory. Now it's new room for
13821 the new set of documentation files.
13822 [Ralf S. Engelschall]
13824 *) SETs were incorrectly DER encoded. This was a major pain, because they
13825 shared code with SEQUENCEs, which aren't coded the same. This means that
13826 almost everything to do with SETs or SEQUENCEs has either changed name or
13827 number of arguments.
13828 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13830 *) Fix test data to work with the above.
13833 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13834 was already fixed by Eric for 0.9.1 it seems.
13835 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13837 *) Autodetect FreeBSD3.
13840 *) Fix various bugs in Configure. This affects the following platforms:
13844 unixware-2.0-pentium
13848 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13849 before they are needed.
13852 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13856 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13858 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13859 changed SSLeay to OpenSSL in version strings.
13860 [Ralf S. Engelschall]
13862 *) Some fixups to the top-level documents.
13865 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13866 because the symlink to include/ was missing.
13867 [Ralf S. Engelschall]
13869 *) Incorporated the popular no-RSA/DSA-only patches
13870 which allow to compile a RSA-free SSLeay.
13871 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13873 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13874 when "ssleay" is still not found.
13875 [Ralf S. Engelschall]
13877 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13878 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13880 *) Updated the README file.
13881 [Ralf S. Engelschall]
13883 *) Added various .cvsignore files in the CVS repository subdirs
13884 to make a "cvs update" really silent.
13885 [Ralf S. Engelschall]
13887 *) Recompiled the error-definition header files and added
13888 missing symbols to the Win32 linker tables.
13889 [Ralf S. Engelschall]
13891 *) Cleaned up the top-level documents;
13892 o new files: CHANGES and LICENSE
13893 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13894 o merged COPYRIGHT into LICENSE
13895 o removed obsolete TODO file
13896 o renamed MICROSOFT to INSTALL.W32
13897 [Ralf S. Engelschall]
13899 *) Removed dummy files from the 0.9.1b source tree:
13900 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13901 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13902 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13903 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13904 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13905 [Ralf S. Engelschall]
13907 *) Added various platform portability fixes.
13910 *) The Genesis of the OpenSSL rpject:
13911 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13912 Young and Tim J. Hudson created while they were working for C2Net until
13914 [The OpenSSL Project]
13917 Changes between 0.9.0b and 0.9.1b [not released]
13919 *) Updated a few CA certificates under certs/
13922 *) Changed some BIGNUM api stuff.
13925 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13926 DGUX x86, Linux Alpha, etc.
13929 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13930 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13934 *) Add -strparse option to asn1pars program which parses nested
13936 [Dr Stephen Henson <shenson@bigfoot.com>]
13938 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13941 *) DSA fix for "ca" program.
13944 *) Added "-genkey" option to "dsaparam" program.
13947 *) Added RIPE MD160 (rmd160) message digest.
13950 *) Added -a (all) option to "ssleay version" command.
13953 *) Added PLATFORM define which is the id given to Configure.
13956 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13959 *) Extended the ASN.1 parser routines.
13962 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13965 *) Added a BN_CTX to the BN library.
13968 *) Fixed the weak key values in DES library
13971 *) Changed API in EVP library for cipher aliases.
13974 *) Added support for RC2/64bit cipher.
13977 *) Converted the lhash library to the crypto/mem.c functions.
13980 *) Added more recognized ASN.1 object ids.
13983 *) Added more RSA padding checks for SSL/TLS.
13986 *) Added BIO proxy/filter functionality.
13989 *) Added extra_certs to SSL_CTX which can be used
13990 send extra CA certificates to the client in the CA cert chain sending
13991 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13994 *) Now Fortezza is denied in the authentication phase because
13995 this is key exchange mechanism is not supported by SSLeay at all.
13998 *) Additional PKCS1 checks.
14001 *) Support the string "TLSv1" for all TLS v1 ciphers.
14004 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
14005 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
14008 *) Fixed a few memory leaks.
14011 *) Fixed various code and comment typos.
14014 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
14015 bytes sent in the client random.
14016 [Edward Bishop <ebishop@spyglass.com>]
projects / platform / upstream / openssl1.1.git / blob